3068521

Appears in sequences

• Number of m-shape set partitions, square array read by ascending antidiagonals, A(m,n) for m, n >= 0.at n=41A260876
• a(n) = (3*n)! * [z^(3*n)] exp(exp(z)/3 + 2*exp(-z/2)*cos(z*sqrt(3)/2)/3 - 1).at n=5A291973
• Generalized Bell numbers, square array read by ascending antidiagonals, A(n, k) for n, k >= 0.at n=41A327001