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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.

A223725 T(n,k)=Number of nXk 0..2 arrays with rows, antidiagonals and columns unimodal.

Table of values

n a(n)
1 3
2 9
3 9
4 22
5 81
6 22
7 46
8 484
9 484
10 46
11 86
12 2116
13 5883
14 2116
15 86
16 148
17 7396
18 46613
19 46613
20 7396
21 148
22 239
23 21904
24 273562
25 608855
26 273562
27 21904
28 239
29 367
30 57121
31 1285547
32 5537147
33 5537147
34 1285547
35 57121
36 367
37 541
38 134689
39 5087912
40 38566854
41 74140718

List of values

[3, 9, 9, 22, 81, 22, 46, 484, 484, 46, 86, 2116, 5883, 2116, 86, 148, 7396, 46613, 46613, 7396, 148, 239, 21904, 273562, 608855, 273562, 21904, 239, 367, 57121, 1285547, 5537147, 5537147, 1285547, 57121, 367, 541, 134689, 5087912, 38566854, 74140718]

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

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