69177612domain: NAppears in sequencesBase-7 complementary numbers: n equals the product of the 7 complement (7-d) of its base-7 digits d.at n=15A298977Generated by Marf-Low rule 173.at n=46A328086Number of indecomposable closed walks of length 2n along the edges of a cube based at a vertex.at n=10A328778