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A208107 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.

%I A208107 #7 Jul 22 2025 21:10:01
%S A208107 40,1600,6016,25555,134160,768544,4747545,30461016,200679160,
%T A208107 1341923275,9060096280,61521142072,419255546841,2863417898992,
%U A208107 19583147331312,134042927712195,917974509748384,6288633342628816,43089144637765369
%N A208107 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
%C A208107 Column 7 of A208108
%H A208107 R. H. Hardin, <a href="/A208107/b208107.txt">Table of n, a(n) for n = 1..210</a>
%F A208107 Empirical: a(n) = 11*a(n-1) -17*a(n-2) -124*a(n-3) +276*a(n-4) +396*a(n-5) -902*a(n-6) -462*a(n-7) +946*a(n-8) +220*a(n-9) -340*a(n-10) -44*a(n-11) +39*a(n-12) +3*a(n-13) -a(n-14) for n>15
%e A208107 Some solutions for n=4
%e A208107 ..0..1..1..0..1..1..1....1..1..0..1..1..0..1....1..1..1..0..1..1..0
%e A208107 ..0..1..1..1..0..1..1....0..0..1..1..0..1..1....0..1..1..0..0..1..1
%e A208107 ..0..1..1..0..1..1..1....1..0..0..1..1..0..1....0..1..1..1..1..1..0
%e A208107 ..0..1..1..1..0..1..1....0..0..1..1..0..0..1....1..1..1..0..0..1..1
%K A208107 nonn
%O A208107 1,1
%A A208107 _R. H. Hardin_ Feb 23 2012