Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an odd number of ones in each row.
A162076
Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an odd number of ones in each row.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =40a(5) =226a(6) =2579a(7) =49498a(8) =1765630a(9) =113965238a(10) =13490574157
External references
- oeis: A162076