Coefficient of x^n in the (n+1)-th iteration of (x + x^2) for n>=1.
A112320
Coefficient of x^n in the (n+1)-th iteration of (x + x^2) for n>=1.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =70a(4) =560a(5) =5810a(6) =74760a(7) =1153740a(8) =20817588a(9) =430604724a(10) =10052947476a(11) =261595087182
External references
- oeis: A112320