A266359 Number of nX5 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nondecreasing.

6, 34, 173, 830, 3669, 14921, 55734, 191916, 612871, 1827072, 5118950, 13561326, 34161206, 82219937, 189887848, 422385924, 907900116, 1891159167, 3827190045, 7541618443, 14499264935, 27245395504, 50118187760, 90379795961, 159985071253

Offset

1,1

Comments

Column 5 of A266362.

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

Some solutions for n=4
..0..0..0..0..0....0..0..0..1..1....0..0..0..0..0....0..0..0..0..1
..0..0..0..0..1....0..1..1..0..0....0..0..0..0..1....0..0..0..1..1
..0..0..0..1..1....1..0..1..0..1....0..0..0..0..1....0..0..1..0..1
..1..1..1..1..0....1..1..0..1..1....0..0..1..1..1....1..1..0..1..1

Crossrefs

Cf. A266362.

Sequence in context: A222190 A304944 A344717 * A198765 A274405 A144142

Adjacent sequences: A266356 A266357 A266358 * A266360 A266361 A266362

Keyword

nonn

Author

R. H. Hardin, Dec 28 2015

Status

approved