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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.

A200858 T(n,k)=Number of nXk 0..4 arrays with every row and column running average nondecreasing rightwards and downwards.

Table of values

n a(n)
1 5
2 15
3 15
4 42
5 105
6 42
7 113
8 647
9 647
10 113
11 297
12 3728
13 8535
14 3728
15 297
16 767
17 20656
18 103528
19 103528
20 20656
21 767
22 1957
23 111222
24 1194898
25 2604826
26 1194898
27 111222
28 1957
29 4947
30 586908
31 13295014
32 61846403
33 61846403
34 13295014
35 586908
36 4947
37 12419

List of values

[5, 15, 15, 42, 105, 42, 113, 647, 647, 113, 297, 3728, 8535, 3728, 297, 767, 20656, 103528, 103528, 20656, 767, 1957, 111222, 1194898, 2604826, 1194898, 111222, 1957, 4947, 586908, 13295014, 61846403, 61846403, 13295014, 586908, 4947, 12419]

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

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