a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 6^(k-1) * a(n-k).
A337597
a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 6^(k-1) * a(n-k).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =96a(4) =1896a(5) =55416a(6) =2182752a(7) =111162528a(8) =7088997888a(9) =550749341952
External references
- oeis: A337597