104128

Appears in sequences

• Decimal part of n-th root of a(n) starts with digit 9.at n=16A034086
• a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 2^(k-1) * a(n-k).at n=6A337592