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.

A229373 Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally.

Table of values

n a(n)
1 3
2 30
3 956
4 78690
5 20014278
6 13999334726
7 29757371834046
8 174511010613631514
9 3123774881474924676470
10 153541601581149110702908096
11 23150533101205838897343355257558
12 9547382122506738591063952302014235288

List of values

[3, 30, 956, 78690, 20014278, 13999334726, 29757371834046, 174511010613631514, 3123774881474924676470, 153541601581149110702908096, 23150533101205838897343355257558, 9547382122506738591063952302014235288]

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

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