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.

A252935 Number of n X 5 nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

n a(n)
1 15
2 83
3 494
4 3067
5 17962
6 86488
7 320270
8 917811
9 2127013
10 4211511
11 7437417
12 12070971
13 18378413
14 26625983
15 37079921
16 50006467
17 65671861
18 84342343
19 106284153
20 131763531
21 161046717
22 194399951
23 232089473
24 274381523
25 321542341

List of values

[15, 83, 494, 3067, 17962, 86488, 320270, 917811, 2127013, 4211511, 7437417, 12070971, 18378413, 26625983, 37079921, 50006467, 65671861, 84342343, 106284153, 131763531, 161046717, 194399951, 232089473, 274381523, 321542341]