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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.

A316198 Number of self-avoiding polygons with perimeter 2*n and sides = 1 that have vertex angles from the set 0, +-Pi/4, +-Pi/2, +-3*Pi/4, not counting rotations and reflections as distinct.

Table of values

n a(n)
1 0
2 2
3 6
4 59
5 695
6 12198

List of values

[0, 2, 6, 59, 695, 12198]

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

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