A162126 - OEIS

A162126

Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 9 ones in any row or column

%I #4 Dec 18 2015 18:17:23

%S 2,4,25,408,18003,2289232,851979730,942937083934,3167530249345690,

%T 32647456893467395175

%N Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 9 ones in any row or column

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 25 2009