a(n)=0^n+sum{k=0..n-1, C(n+k-1,2k)*A000108(k)*3^k*2^(n-k)}.
A152600
a(n)=0^n+sum{k=0..n-1, C(n+k-1,2k)*A000108(k)*3^k*2^(n-k)}.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =80a(4) =790a(5) =8720a(6) =103060a(7) =1275680a(8) =16326190a(9) =214280720a(10) =2868504460a(11) =39014154080a(12) =537592643740
External references
- oeis: A152600