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.

A250956 T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

Table of values

n a(n)
1 15
2 56
3 56
4 209
5 392
6 209
7 780
8 2744
9 2744
10 780
11 2911
12 19208
13 36016
14 19208
15 2911
16 10864
17 134456
18 472712
19 472712
20 134456
21 10864
22 40545
23 941192
24 6204344
25 11633448
26 6204344
27 941192
28 40545
29 151316
30 6588344
31 81431944
32 286298344
33 286298344

List of values

[15, 56, 56, 209, 392, 209, 780, 2744, 2744, 780, 2911, 19208, 36016, 19208, 2911, 10864, 134456, 472712, 472712, 134456, 10864, 40545, 941192, 6204344, 11633448, 6204344, 941192, 40545, 151316, 6588344, 81431944, 286298344, 286298344]