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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.

A186482 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.

Table of values

n a(n)
1 256
2 205
3 205
4 1098
5 362
6 1098
7 1251
8 701
9 701
10 1251
11 4895
12 2049
13 4686
14 2049
15 4895
16 5955
17 3442
18 4810
19 4810
20 3442
21 5955
22 20079
23 8223
24 20224
25 16762
26 20224
27 8223
28 20079
29 27101
30 14492
31 21760
32 25633
33 25633
34 21760
35 14492
36 27101
37 84228
38 35081
39 82632
40 67714

List of values

[256, 205, 205, 1098, 362, 1098, 1251, 701, 701, 1251, 4895, 2049, 4686, 2049, 4895, 5955, 3442, 4810, 4810, 3442, 5955, 20079, 8223, 20224, 16762, 20224, 8223, 20079, 27101, 14492, 21760, 25633, 25633, 21760, 14492, 27101, 84228, 35081, 82632, 67714]

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

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