A235424 Number of (4+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise

9504, 533868, 33411901, 1782209164, 93548701107, 4160234178885, 185279527641812, 7009502577083519, 270646584192371106, 8899758764503359520, 302512531294820523210, 8802358542173512135563, 266430632381355740092269

Offset

1,1

Comments

Row 4 of A235421

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

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

Crossrefs

Sequence in context: A156402 A139676 A291209 * A235420 A236281 A282228

Adjacent sequences: A235421 A235422 A235423 * A235425 A235426 A235427

Keyword

nonn

Author

R. H. Hardin, Jan 10 2014

Status

approved