58213domain: NAppears in sequencesStrong pseudoprimes to base 39.at n=24A020265E.g.f. satisfies A(x) = Sum_{n>=0} x^n/n! * exp(n/2*x) * A(x)^(n/2).at n=7A273953Number of essentially series oriented series-parallel networks with n elements and without multiple unit elements in parallel.at n=12A339288