Consider a sequence generation that follows the following steps. We will store removed values in variable `res`. Assume `n = 25`:
```Haskell
-> [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25] Let's remove the first number => res = [1]. We get..
-> [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]. Let's remove 2 (so res = [1,2]) and every 2-indexed number. We get..
-> [3,5,7,9,11,13,15,17,19,21,23,25]. Now remove 3, then every 3-indexed number. res = [1,2,3]. 
-> [5,7,11,13,17,19,23,25]. Now remove 5, and every 5-indexed number. res = [1,2,3,5]. We get..
-> [7,11,13,17,23,25]. Now remove 7 and every 7-indexed. res = [1,2,3,5,7].  
But we know that there are no other 7-indexed elements, so we include all remaining numbers in res. So res = [1,2,3,5,7,11,13,17,23,25] and sum(res) = 107.

Note that when we remove every n-indexed number, we must remember that indices start at 0. So for every 3-indexed number above:
[3,5,7,9,11,13,15,17,19,21,23], we remove index0=3, index3= 9, index6=15,index9=21, etc.

Note also that if the length of sequence is greater than x, where x is the first element of the sequence, you should continue the remove step: remove x, and every x-indexed number until the length of sequence is shorter than x. In our example above, we stopped at 7 because the the length of the remaining sequence [7,11,13,17,23,25] is shorter than 7.
```
You will be given a number `n` and your task will be to return the sum of the elements in res, where the maximum element in res is `<= n`. 

For example:

```Python
Solve(7) = 18, because this is the sum of res = [1,2,3,5,7].
Solve(25) = 107
```

More examples in the test cases. 

Good luck!

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'def solve(n):\n    xs = list(range(2, n+1))\n    res = 1\n    while xs[0] < len(xs):\n        res += xs[0]\n        del xs[::xs[0]]\n    return res + sum(xs)'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'solve'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 5512