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 A227102 Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two, with rows and columns of the latter in lexicographically nondecreasing order 1

%I

%S 16,341,4444,60039,754758,8638999,89104481,828893716,6983821643,

%T 53621106874,377769331391,2459320959398,14894188221320,84433809668941,

%U 450539327678840,2274144315956048,10906260377874097,49886929929379557

%N Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two, with rows and columns of the latter in lexicographically nondecreasing order

%C Column 5 of A227103

%H R. H. Hardin, <a href="/A227102/b227102.txt">Table of n, a(n) for n = 1..46</a>

%e Some solutions for n=4

%e ..0..0..1..1..0....0..1..1..0..0....0..0..0..1..0....0..0..1..0..0

%e ..0..1..1..0..0....1..1..1..0..0....0..0..0..0..1....1..1..1..1..0

%e ..1..0..1..1..1....1..0..1..1..0....0..0..0..0..1....0..1..1..0..0

%e ..1..1..0..0..1....0..0..0..0..1....0..0..1..0..1....0..0..1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 01 2013

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Last modified February 6 11:51 EST 2023. Contains 360104 sequences. (Running on oeis4.)