A151805 - OEIS

A151805

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 5 ones in any row or column.

%I #4 Dec 18 2015 18:17:15

%S 2,4,21,330,14610,1615666,360541154,138557401940,84078437148114

%N 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 5 ones in any row or column.

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 27 2009