A253379 Number of (5+1)X(n+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

49284, 521009, 5829147, 70942616, 811079978, 8802760516, 90160819133, 829051547587, 7310278949272, 57116400940572, 433479645978767, 2931863943180400, 19425553129121010, 116071717678779409

Offset

1,1

Comments

Row 5 of A253375

Links

R. H. Hardin, Table of n, a(n) for n = 1..44

Example

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

Crossrefs

Sequence in context: A184663 A184660 A054730 * A253372 A204227 A205279

Adjacent sequences: A253376 A253377 A253378 * A253380 A253381 A253382

Keyword

nonn

Author

R. H. Hardin, Dec 30 2014

Status

approved