Look n' Say

Takes in a seed and produces a sequence where each term is
Revert "Look n' Say"

This reverts commit da6a789e5d5514150469652ff3e0dbea39e47fda.
Revert "Revert "Look n' Say""

This reverts commit cc74a7335d3218ac6f0d20dae65f2a15f662e416.