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A181249 Number of nX6 binary matrices with no 2X2 block having four 1's 1

%I #3 Mar 31 2012 12:35:49

%S 64,3105,160697,8191392,419045269,21418970801,1095020802848,

%T 55979092539545,2861765993703849,146298965997241152,

%U 7479088292930771309,382345515897175884705,19546245848381921238016,999242067236417336040593

%N Number of nX6 binary matrices with no 2X2 block having four 1's

%C Column 6 of A181253

%H R. H. Hardin, <a href="/A181249/b181249.txt">Table of n, a(n) for n=1..200</a>

%F Empirical: a(n)=33*a(n-1)+908*a(n-2)+1687*a(n-3)-37947*a(n-4)-16572*a(n-5)+513993*a(n-6)-663729*a(n-7)-486540*a(n-8)+617409*a(n-9)+191835*a(n-10)-49140*a(n-11)

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 10 2010

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Last modified March 2 01:29 EST 2024. Contains 370447 sequences. (Running on oeis4.)