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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.

A206472 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having zero permanent.

Table of values

n a(n)
1 25
2 121
3 121
4 441
5 1411
6 441
7 1849
8 11025
9 11025
10 1849
11 7225
12 106891
13 110889
14 106891
15 7225
16 29241
17 958441
18 1896129
19 1896129
20 958441
21 29241
22 116281
23 8963667
24 23707161
25 68352739
26 23707161
27 8963667
28 116281
29 466489
30 82609921
31 356190129
32 1693734025

List of values

[25, 121, 121, 441, 1411, 441, 1849, 11025, 11025, 1849, 7225, 106891, 110889, 106891, 7225, 29241, 958441, 1896129, 1896129, 958441, 29241, 116281, 8963667, 23707161, 68352739, 23707161, 8963667, 116281, 466489, 82609921, 356190129, 1693734025]

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

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