One of a family of sequences that interpolates between the Bell numbers and the factorials.
A068199
One of a family of sequences that interpolates between the Bell numbers and the factorials.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =114a(5) =618a(6) =3732a(7) =24702a(8) =177126a(9) =1363740a(10) =11195286a(11) =97437138a(12) =894857712a(13) =8637708858a(14) =87333790686a(15) =922203924216
External references
- oeis: A068199