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.

A250734 Number of (5+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Table of values

n a(n)
1 99
2 230
3 600
4 1500
5 3605
6 8514
7 19887
8 46315
9 107565
10 249853
11 579962
12 1346953
13 3127694
14 7265717
15 16877299
16 39213972
17 91109305
18 211714501
19 491957956
20 1143254321
21 2656749170
22 6174181500
23 14348397804
24 33345661179
25 77494714919

List of values

[99, 230, 600, 1500, 3605, 8514, 19887, 46315, 107565, 249853, 579962, 1346953, 3127694, 7265717, 16877299, 39213972, 91109305, 211714501, 491957956, 1143254321, 2656749170, 6174181500, 14348397804, 33345661179, 77494714919]