Triangular array read by rows: T(n,k) is the number of ordered pairs of n-permutations that generate a group with exactly k orbits, 0 <= k <= n, n >= 0.
A327547
Triangular array read by rows: T(n,k) is the number of ordered pairs of n-permutations that generate a group with exactly k orbits, 0 <= k <= n, n >= 0.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =3a(5) =1a(6) =0a(7) =26a(8) =9a(9) =1a(10) =0a(11) =426a(12) =131a(13) =18a(14) =1a(15) =0a(16) =11064a(17) =2910a(18) =395a(19) =30a(20) =1a(21) =0a(22) =413640a(23) =92314a(24) =11475a(25) =925a(26) =45a(27) =1a(28) =0a(29) =20946960
External references
- oeis: A327547