A254426 Number of (5+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

42669, 2182689, 106821947, 5909079229, 310310891535, 16806656467840, 899162029841114, 48457383051958172, 2604389633916102156, 140215640892138848346, 7544756499025174329096, 406138457118644849157522

Offset

1,1

Comments

Row 5 of A254422

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..2..2....1..2....2..0....0..2....1..2....1..2....0..1....1..1....0..1....0..1
..2..2....2..2....2..0....0..2....0..1....0..1....1..0....1..1....1..1....2..2
..2..1....0..1....2..2....2..2....1..0....2..2....2..1....0..1....1..1....1..0
..2..2....0..1....1..1....1..1....2..1....1..2....2..2....1..1....1..0....1..1
..0..1....1..1....2..2....2..2....2..1....2..2....1..1....0..0....2..2....1..0
..1..2....2..2....1..0....0..2....2..2....1..0....0..2....0..2....2..2....0..2

Crossrefs

Sequence in context: A187959 A253521 A254419 * A147635 A236032 A014892

Adjacent sequences: A254423 A254424 A254425 * A254427 A254428 A254429

Keyword

nonn

Author

R. H. Hardin, Jan 30 2015

Status

approved