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A207942 Number of 6Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically.

%I A207942 #7 Jul 22 2025 21:01:54
%S A207942 12,144,556,2239,11256,58602,319439,1760946,9794226,54631117,
%T A207942 305277128,1707053280,9549210261,53426703442,298941739494,
%U A207942 1672751399083,9360192196998,52377176867242,293090264883289,1640067205915482
%N A207942 Number of 6Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically.
%C A207942 Row 6 of A207938
%H A207942 R. H. Hardin, <a href="/A207942/b207942.txt">Table of n, a(n) for n = 1..210</a>
%F A207942 Empirical: a(n) = 10*a(n-1) -13*a(n-2) -131*a(n-3) +320*a(n-4) +667*a(n-5) -2129*a(n-6) -1725*a(n-7) +6833*a(n-8) +2569*a(n-9) -11863*a(n-10) -2473*a(n-11) +11282*a(n-12) +1603*a(n-13) -5660*a(n-14) -606*a(n-15) +1351*a(n-16) +86*a(n-17) -120*a(n-18) for n>19
%e A207942 Some solutions for n=4
%e A207942 ..0..0..0..0....1..1..0..1....0..0..0..0....1..1..1..1....0..1..0..1
%e A207942 ..0..0..0..0....0..1..1..0....0..1..0..1....1..1..1..1....1..1..0..1
%e A207942 ..0..0..0..0....1..1..1..0....0..1..0..1....1..1..1..1....0..1..0..1
%e A207942 ..0..0..0..0....0..1..1..0....0..1..0..1....1..1..1..1....1..1..0..1
%e A207942 ..0..0..0..0....0..1..1..0....0..1..0..1....1..1..1..1....0..1..0..1
%e A207942 ..0..0..0..0....0..1..1..0....0..1..0..1....1..1..1..1....1..1..0..1
%K A207942 nonn
%O A207942 1,1
%A A207942 _R. H. Hardin_ Feb 21 2012