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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.

A206700 T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-2 z-1 z in any row or column.

Table of values

n a(n)
1 3
2 9
3 9
4 26
5 81
6 26
7 75
8 676
9 676
10 75
11 216
12 5625
13 15712
14 5625
15 216
16 622
17 46656
18 363465
19 363465
20 46656
21 622
22 1791
23 386884
24 8366690
25 23335217
26 8366690
27 386884
28 1791
29 5157
30 3207681
31 192513201
32 1488199144
33 1488199144
34 192513201
35 3207681
36 5157
37 14849

List of values

[3, 9, 9, 26, 81, 26, 75, 676, 676, 75, 216, 5625, 15712, 5625, 216, 622, 46656, 363465, 363465, 46656, 622, 1791, 386884, 8366690, 23335217, 8366690, 386884, 1791, 5157, 3207681, 192513201, 1488199144, 1488199144, 192513201, 3207681, 5157, 14849]

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

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