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 A250820 Number of (n+2) X (1+2) 0..1 arrays with nondecreasing maximum minus minimum of every three consecutive values in every row and column. 1
 512, 2744, 13824, 64000, 287496, 1259712, 5451776, 23393656, 99897344, 425259008, 1806932232, 7668682048, 32522853888, 137867914296, 584277056000, 2475715773952, 10489077269000, 44437096088000, 188250740195328 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A250826. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 7*a(n-1) -8*a(n-2) -27*a(n-3) +45*a(n-4) +24*a(n-5) -51*a(n-6) -3*a(n-7) +16*a(n-8) -a(n-9) -a(n-10). EXAMPLE Some solutions for n=4 ..1..1..0....0..1..1....0..1..1....0..0..1....0..0..0....1..1..0....0..1..1 ..0..1..1....0..0..1....0..0..0....0..1..0....0..1..0....0..1..0....0..1..1 ..1..0..1....1..1..1....1..1..0....1..0..0....0..0..0....1..0..0....0..0..0 ..0..0..0....0..0..1....1..0..1....0..1..1....0..1..0....0..0..1....0..0..0 ..1..1..1....0..1..1....0..1..0....1..1..0....1..0..0....1..1..1....1..1..1 ..1..1..0....1..1..0....0..0..0....1..0..1....0..0..1....1..0..0....0..0..0 CROSSREFS Cf. A250826. Sequence in context: A253986 A250826 A250504 * A250497 A254260 A254306 Adjacent sequences: A250817 A250818 A250819 * A250821 A250822 A250823 KEYWORD nonn AUTHOR R. H. Hardin, Nov 27 2014 STATUS approved

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Last modified May 27 13:56 EDT 2024. Contains 372861 sequences. (Running on oeis4.)