A235420 Number of (n+1)X(4+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise

9504, 543946, 33361964, 1782209164, 94717997107, 4225274664375, 190528055285203, 7249712636712619, 281101937356383963, 9327004899765220720, 316252724455345595134, 9306235681834123612150, 279837916042101514803656

Offset

1,1

Comments

Column 4 of A235421

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A139676 A291209 A235424 * A236281 A282228 A084687

Adjacent sequences: A235417 A235418 A235419 * A235421 A235422 A235423

Keyword

nonn

Author

R. H. Hardin, Jan 10 2014

Status

approved