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.

A057407 Number of self-avoiding polygons of area n with 2 (self-avoiding polygon) holes on square lattice (not allowing rotations).

Table of values

n a(n)
13 2
14 36
15 366
16 2832
17 18666
18 110724
19 609922
20 3182038
21 15931446
22 77253554
23 365240626
24 1691895678
25 7707586246
26 34630458076
27 153803559514
28 676416563354
29 2949990640350
30 12772844235264
31 54957447470264

List of values

[2, 36, 366, 2832, 18666, 110724, 609922, 3182038, 15931446, 77253554, 365240626, 1691895678, 7707586246, 34630458076, 153803559514, 676416563354, 2949990640350, 12772844235264, 54957447470264]

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

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