A151802 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A151802

Number of n X n binary arrays with rows, considered as binary numbers, in strictly increasing order, and columns, considered as binary numbers, in nondecreasing order, and no more than 2 ones in any row or column.

2, 4, 13, 54, 257, 1384, 8303, 54674, 390943, 3009943, 24782522, 216985032, 2010748246, 19641718283, 201551129440

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Sequence in context: A030970 A030842 A191293 * A030901 A030939 A030886

Adjacent sequences: A151799 A151800 A151801 * A151803 A151804 A151805

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 27 2009

STATUS

approved