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 A254494 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 114880, 2520832, 50028672, 1018596736, 20365586688, 410218207872, 8153154979328, 162063119050112, 3212390841829632, 63739082154797184, 1262171199650792448, 24992983054334976896, 494505919058516547328 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 4 of A254491 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=1 ..1..0..0....0..1..1....1..0..0....1..0..1....0..0..0....1..0..0....1..0..1 ..0..0..1....0..1..1....0..1..0....0..1..0....1..1..1....1..1..0....0..0..0 ..1..1..1....0..0..0....0..1..0....0..1..1....1..0..0....0..0..0....1..1..1 ..0..0..0....1..1..1....0..0..1....1..0..0....1..0..1....1..1..0....1..0..0 ..0..1..1....0..1..1....1..1..1....1..1..1....1..1..1....0..1..0....0..1..1 ..1..0..0....1..1..0....0..1..1....0..0..0....1..0..0....1..1..0....1..0..0 CROSSREFS Sequence in context: A119128 A276100 A233732 * A254487 A253859 A237692 Adjacent sequences: A254491 A254492 A254493 * A254495 A254496 A254497 KEYWORD nonn AUTHOR R. H. Hardin, Jan 31 2015 STATUS approved

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Last modified March 27 02:29 EDT 2023. Contains 361553 sequences. (Running on oeis4.)