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

114880, 2520832, 50028672, 1018596736, 20365586688, 410218207872, 8153154979328, 162063119050112, 3212390841829632, 63739082154797184, 1262171199650792448, 24992983054334976896, 494505919058516547328

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