Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 2 ones in any row or column.
A162119
Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 2 ones in any row or column.
Terms
- a(0) =2a(1) =4a(2) =16a(3) =67a(4) =327a(5) =1827a(6) =11291a(7) =76436a(8) =560922a(9) =4424644a(10) =37272300a(11) =333474298a(12) =3154416275a(13) =31423894296a(14) =328562851763
External references
- oeis: A162119