A162066 - OEIS

A162066

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

%I #4 Dec 18 2015 18:17:22

%S 2,8,29,128,646,3659,22934,156964,1161703,9226528,78148154,702245554,

%T 6665759481,66584311674,697658373059

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 25 2009