Number of n X n symmetric 0..5 arrays with rows, considered as 6-ary numbers, in nondecreasing order.
A162081
Number of n X n symmetric 0..5 arrays with rows, considered as 6-ary numbers, in nondecreasing order.
Terms
- a(0) =6a(1) =111a(2) =8441a(3) =2951871a(4) =4990997276
External references
- oeis: A162081