A188411 Number of (4*n)X4 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row

14, 124, 723, 3217, 11712, 36659, 101829, 256901, 598561, 1304537, 2685847, 5264872, 9887953, 17884567, 31286432, 53124506, 87823301, 141718060, 223721900, 346177936, 525932968, 785679308, 1155612796, 1675467445, 2396988410

Offset

1,1

Comments

Column 4 of A188416

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

Some solutions for 8X4
..1..1..0..1....1..0..0..1....1..0..0..1....1..1..1..0....1..0..1..0
..1..0..1..0....1..0..0..0....1..0..0..1....1..1..0..0....1..0..0..0
..0..1..1..1....0..1..0..0....0..1..1..0....0..0..1..0....0..1..1..1
..0..0..0..0....0..1..0..0....0..1..0..0....0..0..0..1....0..1..0..1
..0..0..0..0....0..0..1..1....0..0..1..0....0..0..0..1....0..0..0..0
..0..0..0..0....0..0..1..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

Crossrefs

Sequence in context: A235710 A239544 A167567 * A125377 A147590 A167602

Adjacent sequences: A188408 A188409 A188410 * A188412 A188413 A188414

Keyword

nonn

Author

R. H. Hardin Mar 30 2011

Status

approved