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

%I #5 Aug 11 2014 22:45:52

%S 6,66,558,4528,37012,283430,2010569,13174529,79606861,445291143,

%T 2319506105,11318251449,52022806997,226357815317,936451009248,

%U 3697654793472,13982230433991,50782778554993,177615062917012

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

%C Column 5 of A227165

%H R. H. Hardin, <a href="/A227164/b227164.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A227164/a227164.txt">Empirical polynomial of degree 39</a>

%F Empirical polynomial of degree 39 (see link above)

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 03 2013