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.

A253009 Number of nX6 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

n a(n)
1 10
2 85
3 632
4 3423
5 14795
6 54219
7 2327062
8 43197859
9 395069496
10 2063349297
11 7250116841
12 19242081848
13 41884052188
14 79190458776
15 135212633776
16 214009464108
17 319640931500
18 456167117868
19 627648109484
20 838143992620

List of values

[10, 85, 632, 3423, 14795, 54219, 2327062, 43197859, 395069496, 2063349297, 7250116841, 19242081848, 41884052188, 79190458776, 135212633776, 214009464108, 319640931500, 456167117868, 627648109484, 838143992620]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.