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A251371 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock summing to 1 2 3 4 5 6 or 7.

%I A251371 #6 Jun 02 2025 10:23:54
%S A251371 4159927,8017100977,15431888950873,29707797738391051,
%T A251371 57189617044768555919,110094177769643072247073,
%U A251371 211939290252887391404913105,407998534122358956249893397419
%N A251371 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock summing to 1 2 3 4 5 6 or 7.
%C A251371 Column 6 of A251373
%H A251371 R. H. Hardin, <a href="/A251371/b251371.txt">Table of n, a(n) for n = 1..210</a>
%e A251371 Some solutions for n=1
%e A251371 ..0..0..0..0..2..0..1....0..0..0..0..1..0..0....0..0..0..0..2..2..2
%e A251371 ..2..2..0..1..1..1..0....2..0..1..2..2..1..2....1..1..1..2..0..2..0
%K A251371 nonn
%O A251371 1,1
%A A251371 _R. H. Hardin_, Dec 01 2014