a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * binomial(k+1,2) * k * a(n-k).
A352658
a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * binomial(k+1,2) * k * a(n-k).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =39a(4) =508a(5) =9235a(6) =224481a(7) =6959932a(8) =266492388a(9) =12302514945a(10) =671505310855
External references
- oeis: A352658