cp's OEIS Frontend

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.

A056639 Number of polygons of length 2n with 3 (self-avoiding polygon) holes on square lattice (not allowing rotations).

Table of values

n a(n)
16 62
17 3920
18 130560
19 3058544
20 56925214
21 900355884
22 12619939046
23 161208191596
24 1913821820768
25 21416926011756
26 228320059956022
27 2337581305737496
28 23128907576991302
29 222266054948571020
30 2082868947950189248

List of values

[62, 3920, 130560, 3058544, 56925214, 900355884, 12619939046, 161208191596, 1913821820768, 21416926011756, 228320059956022, 2337581305737496, 23128907576991302, 222266054948571020, 2082868947950189248]

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

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