Number of ordered pairs of permutation functions on n elements where f(f(f(x))) = g(g(g(x))).
A239838
Number of ordered pairs of permutation functions on n elements where f(f(f(x))) = g(g(g(x))).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =12a(4) =96a(5) =600a(6) =9360a(7) =146160a(8) =1935360a(9) =41368320a(10) =1092268800a(11) =23111827200a(12) =700300339200
External references
- oeis: A239838