A227384 - OEIS

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

%S 6,56,587,6160,61127,550010,4450124,32473856,215116595,1303420926,

%T 7278846827,37731073135,182726436203,831526393503,3573916903775,

%U 14573693121509,56609147953260,210199678971798,748463901892529

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

%C Column 5 of A227385

%H R. H. Hardin, <a href="/A227384/b227384.txt">Table of n, a(n) for n = 1..87</a>

%H R. H. Hardin, <a href="/A227384/a227384.txt">Empirical polynomial of degree 39</a>

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

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 09 2013