1077612domain: NAppears in sequencesAliquot sequence starting at 138.at n=28A008888Aliquot sequence starting at 150.at n=27A008889Aliquot sequence starting at 168.at n=25A008890Aliquot sequence starting at 570.at n=23A074907a(n) is the number of regular hexagons with all six vertices (x,y,z) in the set {1,2,...,n}^3.at n=27A338322