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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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A227385 LINKS R. H. Hardin, Table of n, a(n) for n = 1..87 R. H. Hardin, Empirical polynomial of degree 39 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: A092655 A099140 A048348 * A199755 A025749 A297705 Adjacent sequences:  A227381 A227382 A227383 * A227385 A227386 A227387 KEYWORD nonn AUTHOR R. H. Hardin Jul 09 2013 STATUS approved

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Last modified January 17 11:47 EST 2021. Contains 340240 sequences. (Running on oeis4.)