A162123 - OEIS

A162123

Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 6 ones in any row or column.

%I #8 Oct 02 2025 23:21:07

%S 2,4,25,408,18003,2289232,797371541,652750415070,1065697211064947

%N Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 6 ones in any row or column.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 25 2009