A254396 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

36317408, 7273310228, 1521733260456, 284691702793848, 56193335758798104, 11088064556797882883, 2165666188993340904078, 425070478163595626887565, 83410123665948575384046056, 16352557115211104772510944008

Offset

1,1

Comments

Row 7 of A254390

Links

R. H. Hardin, Table of n, a(n) for n = 1..35

Example

Some solutions for n=1
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..0..0....0..0..0....1..0..0....1..0..0....0..0..0....1..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..1..0....0..1..0....0..1..0....0..1..0
..0..0..1....1..0..0....0..0..1....1..0..1....1..0..0....0..0..1....1..0..1
..1..1..1....1..0..0....1..0..1....1..1..1....1..1..1....1..0..1....1..1..1
..1..0..0....1..0..0....1..0..1....1..1..1....0..0..0....1..0..1....0..0..1
..0..1..0....1..1..0....0..0..0....0..0..0....1..1..0....0..1..1....0..1..1
..0..1..1....0..0..1....0..1..1....0..1..1....1..1..1....1..1..1....0..1..0
..0..1..0....1..1..0....1..1..0....0..1..0....1..0..1....0..0..0....1..1..1

Crossrefs

Sequence in context: A105296 A362964 A254389 * A253984 A081641 A251372

Adjacent sequences: A254393 A254394 A254395 * A254397 A254398 A254399

Keyword

nonn

Author

R. H. Hardin, Jan 29 2015

Status

approved