1146931domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of driving-point impedances of an n-terminal network.at n=10A003128Triangle read by rows: T(n,k) = Sum_{j=k..n} binomial(n,j)*Stirling_2(j,k)*Bell(n-j), where Bell(n) = A000110(n), for n >= 1, 0 <= k <= n-1.at n=47A244489Prime numbersat n=89086