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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A372101 Number of steps required to kill a hydra composed of a linear graph with n edges where, after removing the rightmost head at step s, s new heads grow to the right of the head's grandparent node (see comments).

Table of values

n a(n)
0 0
1 1
2 3
3 11
4 1114111

List of values

[0, 1, 3, 11, 1114111]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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