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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.

A201836 T(n,k)=Number of nXk 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.

Table of values

n a(n)
1 4
2 10
3 10
4 23
5 50
6 23
7 51
8 212
9 212
10 51
11 110
12 823
13 1629
14 823
15 110
16 233
17 3030
18 11180
19 11180
20 3030
21 233
22 488
23 10777
24 71501
25 135236
26 71501
27 10777
28 488
29 1013
30 37530
31 434721
32 1513357
33 1513357
34 434721
35 37530
36 1013
37 2088
38 128742
39 2553223
40 15948080
41 29732625

List of values

[4, 10, 10, 23, 50, 23, 51, 212, 212, 51, 110, 823, 1629, 823, 110, 233, 3030, 11180, 11180, 3030, 233, 488, 10777, 71501, 135236, 71501, 10777, 488, 1013, 37530, 434721, 1513357, 1513357, 434721, 37530, 1013, 2088, 128742, 2553223, 15948080, 29732625]

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

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