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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.

A200895 Number of nX1 0..5 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

n a(n)
1 6
2 15
3 33
4 46
5 44
6 20
7 214
8 1055
9 3020
10 5124
11 4965
12 2136
13 27564
14 156000
15 491176
16 899572
17 909040
18 394760
19 5486260
20 32803375
21 107532655
22 203115730
23 209292900
24 91748000
25 1319324175
26 8093115065
27 27032377190
28 51739373280
29 53721457020

List of values

[6, 15, 33, 46, 44, 20, 214, 1055, 3020, 5124, 4965, 2136, 27564, 156000, 491176, 899572, 909040, 394760, 5486260, 32803375, 107532655, 203115730, 209292900, 91748000, 1319324175, 8093115065, 27032377190, 51739373280, 53721457020]

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

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