Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and an even number of ones in each row.
A162052
Number of n X n symmetric binary arrays with rows, considered as binary 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) =188a(6) =2150a(7) =40946a(8) =1490523a(9) =95741796a(10) =11466071450
External references
- oeis: A162052