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 A255751 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 8776, 24536, 51064, 71651, 81494, 108201, 145536, 211742, 299128, 414453, 561720, 828476, 1176512, 1635984, 2225984, 3293008, 4684384, 6521408, 8880544, 13147776, 18712416, 26059648, 35495328, 52563392, 74821088, 104209152, 141951008 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A255756 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 2*a(n-1) -a(n-2) +4*a(n-4) -8*a(n-5) +4*a(n-6) for n>18 EXAMPLE Some solutions for n=4 ..0..1..1..1..0....0..0..0..1..0....0..0..0..0..0....0..1..1..0..1 ..1..1..1..0..0....0..1..1..1..0....1..1..1..0..1....1..1..1..1..1 ..0..1..1..1..0....1..1..0..0..1....0..0..1..1..1....1..1..1..0..0 ..1..1..0..1..1....0..1..1..0..0....1..1..0..0..1....0..0..0..1..1 ..1..1..1..0..0....1..0..0..1..0....1..0..0..0..0....0..1..0..0..0 ..1..0..1..1..1....0..0..1..1..0....1..1..1..1..1....1..1..1..1..1 CROSSREFS Cf. A255756 Sequence in context: A061665 A237484 A255758 * A254840 A156083 A249956 Adjacent sequences: A255748 A255749 A255750 * A255752 A255753 A255754 KEYWORD nonn AUTHOR R. H. Hardin, Mar 05 2015 STATUS approved

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Last modified November 29 20:40 EST 2023. Contains 367447 sequences. (Running on oeis4.)