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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.

A268019 T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

Table of values

n a(n)
1 3
2 9
3 9
4 27
5 81
6 27
7 78
8 729
9 729
10 78
11 222
12 6084
13 19683
14 6084
15 222
16 622
17 49284
18 474552
19 474552
20 49284
21 622
22 1722
23 386884
24 10941048
25 31831908
26 10941048
27 386884
28 1722
29 4719
30 2965284
31 240641848
32 2012075697
33 2012075697
34 240641848
35 2965284
36 4719

List of values

[3, 9, 9, 27, 81, 27, 78, 729, 729, 78, 222, 6084, 19683, 6084, 222, 622, 49284, 474552, 474552, 49284, 622, 1722, 386884, 10941048, 31831908, 10941048, 386884, 1722, 4719, 2965284, 240641848, 2012075697, 2012075697, 240641848, 2965284, 4719]

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

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