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A221327 Number of nX7 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

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%I A221327 #6 Jun 02 2025 08:16:20
%S A221327 239,337274,487335857,711858713069,1043094530574190,
%T A221327 1529318909534974055,2242286238164144345340,3287567392078817733944559,
%U A221327 4820042020725407512778215418,7066803372580254890277247530238
%N A221327 Number of nX7 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.
%C A221327 Column 7 of A221328
%H A221327 R. H. Hardin, <a href="/A221327/b221327.txt">Table of n, a(n) for n = 1..14</a>
%e A221327 Some solutions for n=3
%e A221327 ..0..1..1..1..2..1..1....0..1..1..2..2..0..0....0..1..1..1..0..2..1
%e A221327 ..0..1..1..2..1..2..1....0..1..2..2..2..1..0....0..1..2..2..2..1..1
%e A221327 ..0..1..1..2..1..0..1....0..1..0..2..1..1..2....0..1..1..0..1..1..2
%K A221327 nonn
%O A221327 1,1
%A A221327 _R. H. Hardin_ Jan 11 2013

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