O.g.f.: 1/(1-x) * Sum_{n>=0} 1/(1-(n+1)*x)^n * x^n/n! * exp(-x/(1-(n+1)*x)).
A185040
O.g.f.: 1/(1-x) * Sum_{n>=0} 1/(1-(n+1)*x)^n * x^n/n! * exp(-x/(1-(n+1)*x)).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =54a(6) =220a(7) =973a(8) =4607a(9) =23230a(10) =124088a(11) =698471a(12) =4124961a(13) =25474314a(14) =164063103a(15) =1099233251a(16) =7645091839a(17) =55085061358a(18) =410472347944
External references
- oeis: A185040