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 A254252 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 512, 14681, 268900, 2983064, 35691048, 325742026, 3756830312, 53130567141, 538163662362, 8068163879144, 153117743133240, 1493329979839859, 22285849665127808, 1767418588341588795, 9961527956307703614 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A254260 LINKS R. H. Hardin, Table of n, a(n) for n = 1..25 EXAMPLE Some solutions for n=2 ..0..0..1..0....0..1..0..0....0..1..1..0....1..1..0..1....0..1..1..1 ..1..1..1..1....1..0..0..0....1..1..1..0....1..1..0..1....1..1..1..1 ..0..1..0..0....1..1..0..0....0..0..1..0....1..1..0..1....1..0..0..1 ..0..0..1..1....1..1..0..1....1..1..0..0....1..0..0..0....1..1..1..0 CROSSREFS Sequence in context: A253812 A256947 A254720 * A200791 A254812 A329894 Adjacent sequences: A254249 A254250 A254251 * A254253 A254254 A254255 KEYWORD nonn AUTHOR R. H. Hardin, Jan 27 2015 STATUS approved

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Last modified June 8 07:26 EDT 2023. Contains 363157 sequences. (Running on oeis4.)