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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.

A221124 Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.

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%I A221124 #5 Jul 23 2025 01:44:25
%S A221124 144,185164,229006550,282454178707,348270153038959,429398881440049645,
%T A221124 529420758866821620887
%N A221124 Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.
%C A221124 Column 6 of A221125
%e A221124 Some solutions for n=3
%e A221124 ..0..1..1..1..4..1....0..1..1..0..2..2....0..1..1..2..1..0....0..1..1..0..3..0
%e A221124 ..0..3..1..1..0..1....0..3..1..2..0..2....0..3..3..2..0..0....0..3..3..3..1..0
%e A221124 ..0..0..2..0..0..2....0..0..1..1..2..0....0..0..2..0..3..0....0..0..0..1..2..0
%K A221124 nonn
%O A221124 1,1
%A A221124 _R. H. Hardin_ Jan 02 2013