cp's OEIS Frontend

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.

A224173 T(n,k) = number of n X k 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

Table of values

n a(n)
1 4
2 16
3 10
4 50
5 100
6 20
7 130
8 684
9 400
10 35
11 296
12 3526
13 4739
14 1225
15 56
16 610
17 14751
18 38561
19 22988
20 3136
21 84
22 1163
23 52591
24 242114
25 272130
26 87878
27 7056
28 120
29 2083
30 165212
31 1253770
32 2335459
33 1460836
34 282372
35 14400
36 165
37 3544
38 468292
39 5588411
40 15925611

List of values

[4, 16, 10, 50, 100, 20, 130, 684, 400, 35, 296, 3526, 4739, 1225, 56, 610, 14751, 38561, 22988, 3136, 84, 1163, 52591, 242114, 272130, 87878, 7056, 120, 2083, 165212, 1253770, 2335459, 1460836, 282372, 14400, 165, 3544, 468292, 5588411, 15925611]