573616

Appears in sequences

• a(n) = Sum_{k=0..n} binomial(n,k)^3 * 3^k.at n=6A206180
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} k^j * binomial(n,j)^3.at n=51A336163
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} k^j * binomial(n,j)^k.at n=51A336187