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A207957 Number of nX5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 0 vertically.

%I A207957 #7 Jul 22 2025 21:03:27
%S A207957 13,169,699,3080,15839,84013,463482,2593815,14711595,84048508,
%T A207957 482923435,2784827479,16101364492,93259442297,540832199853,
%U A207957 3139061893334,18230253959839,105915789772767,615530706047318,3577847973579475
%N A207957 Number of nX5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 0 vertically.
%C A207957 Column 5 of A207960
%H A207957 R. H. Hardin, <a href="/A207957/b207957.txt">Table of n, a(n) for n = 1..210</a>
%F A207957 Empirical: a(n) = 11*a(n-1) -14*a(n-2) -203*a(n-3) +563*a(n-4) +1329*a(n-5) -5460*a(n-6) -3116*a(n-7) +25220*a(n-8) -3605*a(n-9) -62985*a(n-10) +33885*a(n-11) +86009*a(n-12) -71075*a(n-13) -59522*a(n-14) +69044*a(n-15) +15374*a(n-16) -32682*a(n-17) +2168*a(n-18) +6860*a(n-19) -1480*a(n-20) -448*a(n-21) +128*a(n-22) for n>23
%e A207957 Some solutions for n=4
%e A207957 ..1..1..1..1..1....1..1..0..0..1....0..1..1..1..0....0..1..0..0..1
%e A207957 ..1..1..1..0..0....0..0..1..0..0....0..1..0..0..1....0..1..1..1..1
%e A207957 ..1..1..1..1..1....1..1..0..0..1....0..0..1..1..0....0..1..1..0..0
%e A207957 ..1..1..0..0..1....1..1..1..0..0....0..1..1..1..1....0..0..1..1..1
%K A207957 nonn
%O A207957 1,1
%A A207957 _R. H. Hardin_ Feb 21 2012