a(n) = (n+1)*Sum_{k=1..n} binomial(n-1,k-1)*binomial(n+2*k+2,k+1)/(n+k+2).
A262410
a(n) = (n+1)*Sum_{k=1..n} binomial(n-1,k-1)*binomial(n+2*k+2,k+1)/(n+k+2).
Terms
- a(0) =5a(1) =37a(2) =275a(3) =2071a(4) =15781a(5) =121395a(6) =940915a(7) =7337560a(8) =57507892a(9) =452598884a(10) =3574599205a(11) =28316957579a(12) =224901946395
External references
- oeis: A262410