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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.

A222572 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

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%I A222572 #5 Jul 23 2025 02:46:47
%S A222572 17,292,3999,212957,4102865,278335019,7240361264,617491399888,
%T A222572 18298988998017,1694595769301401,52003776367692101,
%U A222572 4919456993064095471,152349901845469645928,14488875201941399981117,449914171737778687124896
%N A222572 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
%C A222572 Column 7 of A222573
%e A222572 Some solutions for n=3
%e A222572 ..0..1..1..1..1..1..1....0..1..1..2..2..2..2....0..0..1..0..0..0..0
%e A222572 ..1..1..0..1..1..1..1....2..0..2..2..2..2..2....2..0..0..0..0..0..0
%e A222572 ..2..1..0..1..1..1..1....0..0..2..2..2..2..2....0..0..2..0..0..0..0
%K A222572 nonn
%O A222572 1,1
%A A222572 _R. H. Hardin_ Feb 25 2013

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