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 A227164 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
 6, 66, 558, 4528, 37012, 283430, 2010569, 13174529, 79606861, 445291143, 2319506105, 11318251449, 52022806997, 226357815317, 936451009248, 3697654793472, 13982230433991, 50782778554993, 177615062917012 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A227165 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical polynomial of degree 39 FORMULA Empirical polynomial of degree 39 (see link above) EXAMPLE Some solutions for n=4 ..0..0..0..0..0....1..0..0..0..0....1..0..0..0..0....1..0..0..0..0 ..0..0..0..0..0....0..0..0..0..1....0..1..1..0..0....0..0..1..0..0 ..0..1..1..1..0....0..1..0..0..0....0..1..0..0..1....0..1..0..0..0 ..0..0..0..0..1....0..1..0..0..1....0..1..0..1..0....0..0..0..1..0 CROSSREFS Sequence in context: A062184 A119214 A075138 * A043041 A243719 A156237 Adjacent sequences: A227161 A227162 A227163 * A227165 A227166 A227167 KEYWORD nonn AUTHOR R. H. Hardin Jul 03 2013 STATUS approved

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Last modified March 1 08:46 EST 2024. Contains 370430 sequences. (Running on oeis4.)