G.f.: Sum_{n>=0} binomial(4*(n+1), n)/(n+1) * x^n / (1+x)^(2*(n+1)).
A317134
G.f.: Sum_{n>=0} binomial(4*(n+1), n)/(n+1) * x^n / (1+x)^(2*(n+1)).
Terms
- a(0) =1a(1) =2a(2) =9a(3) =44a(4) =236a(5) =1336a(6) =7862a(7) =47608a(8) =294720a(9) =1856748a(10) =11865684a(11) =76731572a(12) =501176237a(13) =3301501694a(14) =21909634763a(15) =146337236580a(16) =982962605577
External references
- oeis: A317134