6338620domain: NAppears in sequencesExpansion of 1/((1-3*x)*(1-7*x)*(1-11*x)).at n=6A018054Triangle read by rows, S_4(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.at n=38A225469