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 A251272 Number of (5+1)X(n+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1
 1049, 8812, 49872, 217634, 790734, 2510004, 7189937, 19018266, 47251067, 111715980, 253943272, 559554564, 1203154060, 2538190856, 5276700889, 10848708252, 22120797741, 44832823100, 90470607368, 182010260670 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 5 of A251268 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 13*a(n-1) -77*a(n-2) +275*a(n-3) -660*a(n-4) +1122*a(n-5) -1386*a(n-6) +1254*a(n-7) -825*a(n-8) +385*a(n-9) -121*a(n-10) +23*a(n-11) -2*a(n-12) EXAMPLE Some solutions for n=3 ..0..0..1..1....1..1..0..0....0..0..0..1....1..1..1..1....1..0..1..0 ..0..0..0..1....0..0..1..1....0..0..1..1....0..0..1..1....0..1..0..1 ..0..0..0..1....0..0..0..0....0..1..1..1....0..1..1..1....0..0..1..1 ..1..1..1..1....0..0..0..0....1..0..0..0....0..1..1..1....0..0..0..1 ..0..0..0..0....0..0..1..1....0..1..1..1....1..1..1..1....0..0..1..1 ..0..0..1..1....0..0..0..1....0..1..1..1....0..0..1..1....0..1..1..1 CROSSREFS Sequence in context: A331346 A164771 A031600 * A030083 A184203 A015064 Adjacent sequences: A251269 A251270 A251271 * A251273 A251274 A251275 KEYWORD nonn AUTHOR R. H. Hardin, Dec 01 2014 STATUS approved

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Last modified October 4 12:52 EDT 2023. Contains 365885 sequences. (Running on oeis4.)