a(n) = n^2 + (1/n) * Sum_{k=1..n-1} binomial(n,k) * k * a(k) * (n-k)^2.
A336183
a(n) = n^2 + (1/n) * Sum_{k=1..n-1} binomial(n,k) * k * a(k) * (n-k)^2.
Terms
- a(0) =1a(1) =5a(2) =23a(3) =154a(4) =1389a(5) =15636a(6) =211231a(7) =3329264a(8) =59969097a(9) =1215233380a(10) =27362096211a(11) =677690995488
External references
- oeis: A336183