G.f.: Sum_{n>=0} binomial(4*(n+1), n)/(n+1) * x^n / (1+x)^(n+1).
A317133
G.f.: Sum_{n>=0} binomial(4*(n+1), n)/(n+1) * x^n / (1+x)^(n+1).
Terms
- a(0) =1a(1) =3a(2) =15a(3) =85a(4) =526a(5) =3438a(6) =23358a(7) =163306a(8) =1167235a(9) =8490513a(10) =62648451a(11) =467769217a(12) =3527692298a(13) =26832220834a(14) =205601792340
External references
- oeis: A317133