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%I #6 Mar 31 2012 12:37:19
%S 26,676,6186,66339,805154,10150118,131365535,1717508184,22609656270,
%T 298602852465,3951916615062,52361336460762,694262252986965,
%U 9209037126814876,122184478450115942,1621376985825702435
%N Number of nX6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically
%C Column 6 of A207717
%H R. H. Hardin, <a href="/A207715/b207715.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 23*a(n-1) -28*a(n-2) -2457*a(n-3) +10959*a(n-4) +103716*a(n-5) -634422*a(n-6) -2242422*a(n-7) +17887504*a(n-8) +26428898*a(n-9) -300826296*a(n-10) -148435430*a(n-11) +3302459147*a(n-12) -167725595*a(n-13) -24923250810*a(n-14) +9402329532*a(n-15) +133649558772*a(n-16) -78028556072*a(n-17) -520568587713*a(n-18) +375014950947*a(n-19) +1494707791108*a(n-20) -1218224909056*a(n-21) -3195077022510*a(n-22) +2826366520094*a(n-23) +5117419628861*a(n-24) -4809057001697*a(n-25) -6166506004962*a(n-26) +6089323867306*a(n-27) +5603655169466*a(n-28) -5787797018192*a(n-29) -3843410761191*a(n-30) +4150572495465*a(n-31) +1988163477936*a(n-32) -2251338950714*a(n-33) -773685065704*a(n-34) +923849679134*a(n-35) +225428240345*a(n-36) -286200161001*a(n-37) -48815174830*a(n-38) +66619716180*a(n-39) +7766794220*a(n-40) -11560521080*a(n-41) -891616995*a(n-42) +1477500185*a(n-43) +71608012*a(n-44) -136573112*a(n-45) -3795474*a(n-46) +8884698*a(n-47) +115712*a(n-48) -389954*a(n-49) -1066*a(n-50) +10767*a(n-51) -41*a(n-52) -164*a(n-53) +a(n-54) +a(n-55) for n>56
%e Some solutions for n=4
%e ..1..0..1..0..1..1....1..1..0..1..0..0....0..1..0..1..0..0....1..0..1..1..0..1
%e ..1..0..1..0..1..1....1..0..1..1..1..1....1..1..1..0..1..0....0..1..1..1..0..1
%e ..1..0..1..0..1..0....0..1..0..1..0..0....0..1..0..1..0..0....1..1..1..1..0..0
%e ..1..0..1..0..1..1....1..1..1..1..1..1....1..0..1..1..1..0....0..1..0..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 19 2012
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