Number of pairs of functions (f,g) on a set of n elements into itself satisfying f(x) = g(f(g(x))).
A239753
Number of pairs of functions (f,g) on a set of n elements into itself satisfying f(x) = g(f(g(x))).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =87a(4) =1312a(5) =24685a(6) =564336a(7) =15168811
External references
- oeis: A239753