Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an even number of ones in each row.
A162074
Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an even number of ones in each row.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =8a(4) =31a(5) =187a(6) =2283a(7) =42743a(8) =1641965a(9) =103253028a(10) =12810578372
External references
- oeis: A162074