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.

A231225 Number of (n+2)X(6+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

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%I A231225 #6 Jul 23 2025 06:19:25
%S A231225 22,103,552,2962,19935,117178,748665,4870988,31483476,210326324,
%T A231225 1392987995,9318227740,62685201542,421269716690,2844334077278,
%U A231225 19215230536497,129923432463015,879756395566799,5958107153462019
%N A231225 Number of (n+2)X(6+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.
%C A231225 Column 6 of A231227
%H A231225 R. H. Hardin, <a href="/A231225/b231225.txt">Table of n, a(n) for n = 1..74</a>
%e A231225 Some solutions for n=4
%e A231225 ..0..0..0..0..1..1..1..1....0..0..1..1..2..2..1..1....0..0..1..1..1..1..1..1
%e A231225 ..0..0..0..0..1..1..1..1....0..0..1..1..2..2..1..1....0..0..1..1..1..1..1..1
%e A231225 ..1..1..1..0..0..1..1..1....0..0..0..1..1..2..2..1....0..0..0..1..1..1..1..1
%e A231225 ..1..1..1..1..0..0..1..1....0..0..0..1..1..2..2..1....0..0..0..2..2..1..1..1
%e A231225 ..1..1..1..1..0..0..0..0....0..0..1..1..2..2..1..1....0..0..2..2..2..2..1..1
%e A231225 ..1..1..1..1..0..0..0..0....0..0..1..1..2..2..1..1....0..0..2..2..2..2..1..1
%K A231225 nonn
%O A231225 1,1
%A A231225 _R. H. Hardin_, Nov 05 2013