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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.

A265861 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any vertical neighbor equal to n-1.

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%I A265861 #4 Aug 12 2016 07:05:17
%S A265861 1,0,152,22016,11544576,7521762432,11355242996304,19696965348836352
%N A265861 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any vertical neighbor equal to n-1.
%C A265861 Column 3 of A265863.
%e A265861 Some solutions for n=4
%e A265861 ..2..3..3....2..2..2....1..0..3....3..0..1....2..1..3....2..0..2....0..1..0
%e A265861 ..0..1..2....3..0..0....1..1..2....1..2..0....2..0..1....2..1..0....2..1..1
%e A265861 ..0..1..2....3..1..1....3..0..3....3..2..1....3..0..3....3..1..1....3..3..0
%e A265861 ..1..3..0....1..0..3....2..0..2....2..3..0....2..0..1....3..3..0....3..2..2
%Y A265861 Cf. A265863.
%K A265861 nonn
%O A265861 1,3
%A A265861 _R. H. Hardin_, Dec 17 2015

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