G.f.: exp( Sum_{n>=1} [Sum_{d|n} (-1)^(n-d)*d^n] * x^n/n ).
A163203
G.f.: exp( Sum_{n>=1} [Sum_{d|n} (-1)^(n-d)*d^n] * x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =11a(4) =79a(5) =713a(6) =8486a(7) =127372a(8) =2248390a(9) =45527161a(10) =1048442107a(11) =27060812167a(12) =771886991408
External references
- oeis: A163203