1114078domain: NAppears in sequencesa(n) = 2*n * Stirling2(n-1,2).at n=17A052749Triangle read by rows. Denominators of the coefficients of a sequence of rational polynomials r_n(x) with r_n(1) = B(2*n), where B(n) are the Bernoulli numbers.at n=37A356653