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A227384
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
1
6, 56, 587, 6160, 61127, 550010, 4450124, 32473856, 215116595, 1303420926, 7278846827, 37731073135, 182726436203, 831526393503, 3573916903775, 14573693121509, 56609147953260, 210199678971798, 748463901892529
OFFSET
1,1
COMMENTS
Column 5 of A227385
FORMULA
Empirical polynomial of degree 39 (see link above)
EXAMPLE
Some solutions for n=4
..1..0..0..0..0....0..1..0..0..0....0..0..0..1..0....0..1..0..0..0
..0..0..0..1..0....1..0..0..1..1....0..0..1..0..0....1..0..0..1..1
..0..0..1..0..1....0..0..1..1..0....0..1..0..0..0....0..0..1..1..1
..0..1..1..1..1....0..0..1..1..1....0..0..1..1..0....0..0..0..0..0
CROSSREFS
Sequence in context: A099140 A371739 A048348 * A199755 A025749 A365766
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 09 2013
STATUS
approved