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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.

A316197 Number of self-avoiding polygons with perimeter 2*n and sides = 1 that have vertex angles from the set +-Pi/7, +-3*Pi/7, +-5*Pi/7, not counting rotations and reflections as distinct.

Table of values

n a(n)
1 0
2 0
3 3
4 4
5 83
6 533
7 8329

List of values

[0, 0, 3, 4, 83, 533, 8329]

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

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