diff --git a/.gitattributes b/.gitattributes
index bed0738c7eeb449bca98b5d2f33c89a1ee56349a..62cbf87be2e449b41750f07f6916e6b93372e734 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+*.csv filter=lfs diff=lfs merge=lfs -text
diff --git a/.gitignore b/.gitignore
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index 0000000000000000000000000000000000000000..bf48cdbd3b6f7b3c69a80dee1cb7cd49c6555c05
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+task/
+hold/
+code/
+.DS_Store
diff --git a/README.md b/README.md
index 81d1f711cfedf05019096c7cbbe6d593e5520900..30bab673ea4dd97731dfcee2acdf003231bb494a 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,78 @@
----
-license: cc0-1.0
----
+---
+license: cc0-1.0
+pretty_name: "Integer Sequences"
+tags:
+  - mathematics
+  - integers
+  - sequences
+  - primes
+  - combinatorics
+  - number-theory
+---
+
+# Integer Sequences
+
+Many integer sequences as one-value-per-line CSV files.
+Generated from formulas, recurrences, sieves, and filters.
+Primes sourced from https://t5k.org.
+
+## Contents
+
+Each file in `base/` holds one sequence, one integer per line,
+sorted ascending.
+
+### Figurate and geometric
+
+- `triangular`, `pentagonal`, `hexagonal`, `heptagonal`, `star`
+- `pow-2`, `pow-3`, `pow-5`, `pow-7`
+- `tetrahedral`, `pentatope`, `octahedral`
+- `square-pyramidal`, `stella-octangula`
+- `icosahedral`, `dodecahedral`, `rhombic-dodecahedral`
+- `truncated-tetrahedral`, `truncated-octahedral`, `truncated-cube`
+- `centered-triangular`, `centered-square`, `centered-pentagonal`,
+  `centered-hexagonal`, `centered-heptagonal`, `centered-octagonal`,
+  `centered-decagonal`
+- `N-gonal-pyramidal` (3 through 20)
+- `N-centered-polygonal` (3 through 11)
+- `pronic`
+
+### Recurrence-based
+
+- `fibonacci`, `lucas`, `padovan`, `tribonacci`, `pell`, `jacobsthal`
+- `catalan`, `bell`, `motzkin`, `delannoy`, `derangement`
+- `partition`, `planar-partitions`
+- `euler-number`, `stirling-second`
+- `look-and-say`, `sylvester`, `recaman`, `stern-brocot`
+
+### Prime and factoring
+
+- `prime` (50 million, from t5k.org)
+- `twin-prime`, `safe-prime`, `sophie-germain-prime`, `super-prime`
+- `semiprime`, `sphenic`, `composite`
+- `square-free`, `powerful`
+- `primorial`
+
+### Digit and filter
+
+- `palindromic`, `happy`, `harshad`, `abundant`, `deficient`
+- `binary-even` (evil numbers), `smith`, `lucky`
+- `undulating`, `narcissistic`, `automorphic`, `kaprekar`
+- `collatz-length`, `euler-totient`, `divisors`
+
+### Other
+
+- `natural`, `n-eq-3-mod-4`, `factorial`, `repunit`
+- `binary-base-tree` (Wedderburn-Etherington)
+- `highly-composite`, `amicable`
+- Static lookups: `perfect`, `weird`, `order-of-simple-groups`,
+  `connected-planar-graph`, `number-of-connected-graphs`,
+  `planar-graph`, `irreducible-polynomials`
+
+## Sources
+
+- **The Prime Pages (t5k.org)**: https://t5k.org/lists/small/millions/
+- **OEIS**: https://oeis.org (reference for sequence definitions)
+
+## License
+
+CC0-1.0. The sequences are mathematical facts, not creative works.
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diff --git a/base/readme.md b/base/readme.md
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+# integer
+
+Integer datasets sourced from the Prime Pages.
+
+## Sources
+
+- **The Prime Pages (t5k.org)**: https://t5k.org
+  - Prime number lists: https://t5k.org/lists/small/millions/
+  - Maintained by Chris Caldwell and the University of
+    Tennessee at Martin.
+
+## Contents
+
+- `hold/prime/*.txt` — raw text files from t5k.org, 50 files
+  covering the first 50 million primes.
+- `hold/prime.csv` — compiled output, one prime per line,
+  sorted ascending. Built by `task/compile-primes.ts`.
+
+## How to rebuild
+
+```
+pnpm tsx base/archive/import/integer/task/compile-primes.ts
+```
+
+## License
+
+The Prime Pages data is freely available for non-commercial
+and educational use. See https://t5k.org for terms.
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+  "form": "deck@1",
+  "provider": "cluesurf",
+  "project": "integer",
+  "title": "Integer Sequences",
+  "description": "Many integer sequences generated from formulas, recurrences, sieves, and filters. Covers figurate numbers, prime derivatives, combinatorial sequences, digit-based sequences, and more. Primes sourced from t5k.org.",
+  "version": "v0.1.0",
+  "tags": [
+    "mathematics",
+    "integers",
+    "sequences",
+    "primes",
+    "combinatorics",
+    "number-theory"
+  ],
+  "authors": [
+    {
+      "name": "Lance Pollard",
+      "email": "lp@elk.fm",
+      "affiliation": "ClueSurf"
+    }
+  ],
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+    }
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+      "provider": "t5k.org",
+      "title": "The Prime Pages: First 50 Million Primes",
+      "url": "https://t5k.org/lists/small/millions/",
+      "accessedAt": "2026-04-11T00:00:00Z"
+    },
+    {
+      "provider": "oeis",
+      "title": "The On-Line Encyclopedia of Integer Sequences",
+      "url": "https://oeis.org",
+      "accessedAt": "2026-04-11T00:00:00Z"
+    }
+  ]
+}