Number of pairs (f,g) of endofunctions on [n] such that the composite function gf has no fixed point.
A284458
Number of pairs (f,g) of endofunctions on [n] such that the composite function gf has no fixed point.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =156a(4) =16920a(5) =2764880a(6) =650696400a(7) =210105425628
External references
- oeis: A284458