G.f. satisfies: a(n) = [x^n] ( A(x)^(n+1) + 1/A(x)^(n+1) ) / (n+1) for n>1, with a(0)=a(1)=1.
A243426
G.f. satisfies: a(n) = [x^n] ( A(x)^(n+1) + 1/A(x)^(n+1) ) / (n+1) for n>1, with a(0)=a(1)=1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =20a(4) =215a(5) =3019a(6) =50750a(7) =978792a(8) =21118641a(9) =501447228a(10) =12954812178a(11) =361153740034
External references
- oeis: A243426