a(n) is the number of endofunctions on a set of size n with preimage constraint {0, 1, 2, 3, 4}.
A324804
a(n) is the number of endofunctions on a set of size n with preimage constraint {0, 1, 2, 3, 4}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =27a(4) =256a(5) =3120a(6) =46470a(7) =817950a(8) =16612120a(9) =382367160a(10) =9836517600a(11) =279684716850
External references
- oeis: A324804