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A217272 Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor.

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%I A217272 #5 Jul 22 2025 23:39:06
%S A217272 32,142129,402494400,1117092569476,3080781263731464,
%T A217272 8491624540729737796,23397344246732649325860
%N A217272 Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor.
%C A217272 Column 7 of A217273
%e A217272 Some solutions for n=3
%e A217272 ..1..1..0..0..2..2..1....1..1..0..0..2..1..0....1..1..0..0..1..2..0
%e A217272 ..0..0..1..1..1..0..0....0..0..1..1..0..0..3....0..0..1..1..0..0..1
%e A217272 ..2..2..1..2..1..2..1....2..2..2..2..1..1..1....1..2..3..3..2..1..1
%K A217272 nonn
%O A217272 1,1
%A A217272 _R. H. Hardin_ Sep 29 2012

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