12814390domain: NAppears in sequencesNumber of ordered set partitions with a designated element in each block and no block containing less than two elements.at n=10A052848Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - x^k/k! * (exp(x) - 1)).at n=76A355666