3182454

Appears in sequences

• a(0) = 1 and a(n) = (1/n) * Sum_{k=1..n} binomial(n,k) * binomial(n+(n-1)*k,k-1) for n > 0.at n=7A335871
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^7/(1 - x*A(x)).at n=7A378692