47271domain: NAppears in sequencesExpansion of 1/((1-x)*(1-2*x)*(1-3*x)*(1-7*x)).at n=5A021034Expansion of 1/((1-x)*(1-2*x)*(1-7*x)*(1-11*x)).at n=4A021244Triangle read by rows: 3-Stirling numbers of the second kind.at n=40A143495