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 A258680 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum 1
 5744640, 125888400, 4096960560, 133333061904, 3662507469600, 100604912040000, 3022970884380000, 90834063491610000, 2620890308853171600, 75622137191681873296, 2230153722476731923648, 65768911202153889517824 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A258681 LINKS R. H. Hardin, Table of n, a(n) for n = 1..13 EXAMPLE Some solutions for n=1 ..0..0..0..0..0..0..1..1..1....0..0..0..0..1..0..0..0..1 ..1..0..1..1..1..0..1..1..0....0..1..0..1..1..0..0..1..1 ..1..0..0..1..1..0..1..0..0....0..1..1..0..0..1..0..0..0 CROSSREFS Cf. A258681 Sequence in context: A151655 A283445 A234256 * A151699 A038828 A038817 Adjacent sequences: A258677 A258678 A258679 * A258681 A258682 A258683 KEYWORD nonn AUTHOR R. H. Hardin, Jun 07 2015 STATUS approved

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Last modified April 14 00:20 EDT 2024. Contains 371652 sequences. (Running on oeis4.)