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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.

A266130 Number of nX7 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.

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%I A266130 #3 Dec 21 2015 12:28:07
%S A266130 25,2141,11044,347576,16386099,325554385,10444421518,364864463172,
%T A266130 9780785065374,322718526988333,10659390930051828,315717305995251778
%N A266130 Number of nX7 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.
%C A266130 Column 7 of A266131.
%e A266130 Some solutions for n=3
%e A266130 ..1..1..1..2..1..2..0....1..2..3..2..1..1..0....1..1..1..2..0..2..1
%e A266130 ..2..0..0..3..2..0..1....1..0..3..2..1..0..1....0..0..2..1..1..0..0
%e A266130 ..1..1..2..1..2..1..0....0..1..2..1..0..2..0....1..2..1..2..2..1..1
%Y A266130 Cf. A266131.
%K A266130 nonn
%O A266130 1,1
%A A266130 _R. H. Hardin_, Dec 21 2015

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