97889domain: NAppears in sequencesn-th positive integer whose digits sum up to n.at n=40A081927Number of different n X n symmetric matrices with nonnegative entries summing to 4. Also number of symmetric oriented graphs with 4 arcs on n points.at n=22A139594a(n) is the n-th J_6-prime (Josephus_6 prime).at n=22A163786