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A228281 Number of nX6 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.

%I A228281 #10 Sep 01 2013 22:37:23
%S A228281 8,28,337,2448,21166,172082,1428523,11771298,97268701,802886174,
%T A228281 6629901197,54739811878,451976078779,3731849749697,30812948919061,
%U A228281 254414847888742,2100639733295629,17344457600010491,143208852222784259
%N A228281 Number of nX6 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.
%C A228281 Column 6 of A228285
%H A228281 R. H. Hardin, <a href="/A228281/b228281.txt">Table of n, a(n) for n = 1..210</a>
%F A228281 a(n) = a(n-1) +42*a(n-2) +147*a(n-3) +70*a(n-4) -478*a(n-5) -449*a(n-6) +1199*a(n-7) +732*a(n-8) -2727*a(n-9) +659*a(n-10) +3827*a(n-11) -5776*a(n-12) +3926*a(n-13) -1152*a(n-14) -148*a(n-15) +154*a(n-16) +32*a(n-17) -29*a(n-18) -6*a(n-19) +3*a(n-20) +a(n-21)
%e A228281 Some solutions for n=4
%e A228281 ..1..0..0..0..0..0....1..0..0..0..1..0....1..0..0..0..1..0....1..0..1..0..0..1
%e A228281 ..0..0..0..1..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
%e A228281 ..0..1..0..0..0..1....0..0..0..0..0..0....0..0..1..0..0..1....0..0..0..0..0..0
%e A228281 ..0..0..0..0..1..0....0..0..0..1..0..1....0..0..0..0..0..0....0..0..0..1..0..0
%Y A228281 See A228277-A228285, especially the latter.
%K A228281 nonn
%O A228281 1,1
%A A228281 _R. H. Hardin_ Aug 19 2013
%E A228281 Edited by _N. J. A. Sloane_, Aug 22 2013