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.

A250726 Number of (n+1) X (5+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)
1 257
2 596
3 1158
4 2092
5 3605
6 6016
7 9728
8 15297
9 23407
10 34943
11 50970
12 72810
13 102025
14 140498
15 190420
16 254375
17 335331
18 436729
19 562478
20 717048
21 905469
22 1133428
23 1407272
24 1734109
25 2121815
26 2579139
27 3115714
28 3742166
29 4470129
30 5312358
31 6282748
32 7396451

List of values

[257, 596, 1158, 2092, 3605, 6016, 9728, 15297, 23407, 34943, 50970, 72810, 102025, 140498, 190420, 254375, 335331, 436729, 562478, 717048, 905469, 1133428, 1407272, 1734109, 2121815, 2579139, 3115714, 3742166, 4470129, 5312358, 6282748, 7396451]