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A187422 Number of (n+1)X5 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.

%I A187422 #7 Jul 22 2025 10:43:51
%S A187422 3593,44512,602024,10014852,139898890,2183222530,33876667824,
%T A187422 532183243177,8196134675647,127027583294006,1971647634788057,
%U A187422 30657997754787486,475925414500334404,7389192788201124449
%N A187422 Number of (n+1)X5 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.
%C A187422 Column 4 of A187425
%H A187422 R. H. Hardin, <a href="/A187422/b187422.txt">Table of n, a(n) for n = 1..57</a>
%e A187422 Some solutions for 3X5
%e A187422 ..0..0..2..2..2....0..1..2..1..1....0..2..1..2..2....0..2..1..2..1
%e A187422 ..1..1..1..0..0....2..1..0..0..0....1..2..0..0..0....1..2..0..2..2
%e A187422 ..0..0..1..1..1....0..1..2..2..2....0..2..1..1..0....0..2..1..1..0
%K A187422 nonn
%O A187422 1,1
%A A187422 _R. H. Hardin_ Mar 09 2011