E.g.f.: Sum_{n>=0} x^n/n! * Product_{k=1..n} (n+1-k) + k*x^2.
A316702
E.g.f.: Sum_{n>=0} x^n/n! * Product_{k=1..n} (n+1-k) + k*x^2.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =12a(4) =84a(5) =640a(6) =6060a(7) =70728a(8) =941808a(9) =13950144a(10) =230971680a(11) =4242680640a(12) =85192002720
External references
- oeis: A316702