G.f.: exp( Sum_{n>=1} A000984(n)*A000172(n)/4 * x^n/n ), which involves central binomial coefficients (A000984) and Franel numbers (A000172).
A199816
G.f.: exp( Sum_{n>=1} A000984(n)*A000172(n)/4 * x^n/n ), which involves central binomial coefficients (A000984) and Franel numbers (A000172).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =101a(4) =1639a(5) =30665a(6) =630225a(7) =13836981a(8) =319062453a(9) =7640441894a(10) =188534274850
External references
- oeis: A199816