Definition:Earthworm Sequence/Historical Note
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Historical Note on Earthworm Sequence
The earthworm sequence was invented by Clifford A. Pickover, and appears in his $1991$ work Computers and the Imagination.
His interest is specifically in whether each of the integers selected for $h_1$ ever returns to its starting point.
He fails to document the details of what happens for $h_0 = 50$.
The only reason this sequence appears here is because prime.mover found a piece of paper with his analysis on it in a big pile of material which is in the process of being recycled.
Sources
- 1991: Clifford A. Pickover: Computers and the Imagination: Part $\text V$. Exploration: Chapter $41$. Earthworm Algebra