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.

A250795 Number of (n+1) X (6+1) 0..1 arrays with nondecreasing min(x(i,j), x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 530
2 1818
3 6230
4 21610
5 76110
6 270598
7 968942
8 3485538
9 12580830
10 45517150
11 164970110
12 598685226
13 2174802030
14 7906183238
15 28758522030
16 104655742642
17 380990823486
18 1387358367918
19 5053131325982
20 18408177907066
21 67069331582158

List of values

[530, 1818, 6230, 21610, 76110, 270598, 968942, 3485538, 12580830, 45517150, 164970110, 598685226, 2174802030, 7906183238, 28758522030, 104655742642, 380990823486, 1387358367918, 5053131325982, 18408177907066, 67069331582158]