1545600

Appears in sequences

• Triangle read by rows. T(n, k) = k! * BellPolynomial(n, k).at n=20A350258
• Triangle read by rows. T(n, k) = n! * BellPolynomial(n, k).at n=20A350259
• Expansion of e.g.f. exp(2*x^2) / (1 - x * exp(x^2)).at n=8A375627
• Square array A(n,k) = A388978(A388981(n, k)), read by descending antidiagonals.at n=40A389168
• Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + (exp(x^3) - 1)/x^2) ).at n=8A392890