a(n) = n! * Sum_{k=0..n} Bell(k)/k! (cf. A000110).
A101053
a(n) = n! * Sum_{k=0..n} Bell(k)/k! (cf. A000110).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =107a(5) =587a(6) =3725a(7) =26952a(8) =219756a(9) =1998951a(10) =20105485a(11) =221838905a(12) =2666280457a(13) =34689290378a(14) =485840964614
External references
- oeis: A101053