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.
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.
Terms
- a(0) =2a(1) =8a(2) =29a(3) =128a(4) =646a(5) =3659a(6) =22934a(7) =156964a(8) =1161703a(9) =9226528a(10) =78148154a(11) =702245554a(12) =6665759481a(13) =66584311674a(14) =697658373059
External references
- oeis: A162066