A188415 Number of (8*n)X8 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row.

2780, 5396178, 4505774905, 1943505834628, 497114063711190

Offset

1,1

Comments

Column 8 of A188416

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 16X8
..1..0..0..0..0..0..0..1....1..0..0..0..0..0..1..1....1..0..0..0..0..0..1..0
..1..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0
..0..1..0..0..0..0..0..0....0..1..0..0..0..0..1..0....0..1..0..0..0..1..0..0
..0..1..0..0..0..0..0..0....0..1..0..0..0..0..0..1....0..1..0..0..0..0..0..0
..0..0..1..0..1..0..1..0....0..0..1..0..0..1..0..0....0..0..1..0..1..0..1..0
..0..0..1..0..0..0..0..0....0..0..1..0..0..0..0..0....0..0..1..0..0..0..0..1
..0..0..0..1..0..1..0..0....0..0..0..1..1..0..0..0....0..0..0..1..0..0..0..1
..0..0..0..1..0..0..0..0....0..0..0..1..1..0..0..0....0..0..0..1..0..0..0..0
..0..0..0..0..1..0..1..0....0..0..0..0..0..1..0..0....0..0..0..0..1..1..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..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..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..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: A099691 A231739 A251200 * A236125 A251844 A237230

Adjacent sequences: A188412 A188413 A188414 * A188416 A188417 A188418

Keyword

nonn

Author

R. H. Hardin, Mar 30 2011

Status

approved