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.

A269104 Number of n X 3 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 60
2 1740
3 40908
4 872460
5 17593092
6 342055548
7 6482020140
8 120520189980
9 2208175854948
10 39988864047276
11 717328864510092
12 12766536225007020
13 225704408971133124
14 3967699804321484124
15 69407066832964073964

List of values

[60, 1740, 40908, 872460, 17593092, 342055548, 6482020140, 120520189980, 2208175854948, 39988864047276, 717328864510092, 12766536225007020, 225704408971133124, 3967699804321484124, 69407066832964073964]

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

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