342846domain: NAppears in sequencesHankel transform of A078818.at n=4A218440Triangle read by rows, T(n,k) = Sum_{j=0..n} C(n,j)*L(j,k), L the unsigned Lah numbers A271703, for n>=0 and 0<=k<=n.at n=50A271705Number of ways to write n as an ordered sum of 9 primes.at n=31A340965