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A207930 Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.

%I A207930 #7 Jul 22 2025 21:00:59
%S A207930 10,100,240,576,1872,6084,18096,53824,165648,509796,1542240,4665600,
%T A207930 14251680,43533604,132223920,401601600,1223922960,3730033476,
%U A207930 11344617648,34503805504,105068389776,319946347044,973567075392,2962474361856
%N A207930 Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.
%C A207930 Row 4 of A207928
%H A207930 R. H. Hardin, <a href="/A207930/b207930.txt">Table of n, a(n) for n = 1..210</a>
%F A207930 Empirical: a(n) = a(n-1) -a(n-2) +8*a(n-3) +34*a(n-4) +14*a(n-5) +42*a(n-6) -42*a(n-8) -14*a(n-9) -34*a(n-10) -8*a(n-11) +a(n-12) -a(n-13) +a(n-14) for n>15
%e A207930 Some solutions for n=8
%e A207930 ..1..0..1..1..1..0..0..1....0..1..1..0..1..1..1..0....0..1..1..0..1..1..0..1
%e A207930 ..0..0..1..1..0..1..1..0....1..1..1..0..0..1..1..1....0..1..1..0..0..1..1..0
%e A207930 ..1..1..0..0..1..1..1..0....1..0..0..1..1..0..0..1....1..0..0..1..1..0..1..1
%e A207930 ..1..0..1..1..1..0..0..1....0..0..1..1..1..1..1..0....0..1..1..0..1..1..0..1
%K A207930 nonn
%O A207930 1,1
%A A207930 _R. H. Hardin_ Feb 21 2012