a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k^4 * a(n-k).
A337826
a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k^4 * a(n-k).
Terms
- a(0) =1a(1) =1a(2) =10a(3) =105a(4) =2248a(5) =62445a(6) =2390436a(7) =116650177a(8) =7043659904a(9) =514744959321
External references
- oeis: A337826