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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.

A269294 Number of 6Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 4096
2 3306744
3 1085203980
4 309846524148
5 81907569617580
6 20680187784811380
7 5062027330721456172
8 1211690913720475660164
9 285185178252679536489420
10 66240633180683878759737972
11 15223317892237120439440690380

List of values

[4096, 3306744, 1085203980, 309846524148, 81907569617580, 20680187784811380, 5062027330721456172, 1211690913720475660164, 285185178252679536489420, 66240633180683878759737972, 15223317892237120439440690380]

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

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