37822domain: NAppears in sequencesNumber of 5-tuples of different integers from [ 1,n ] with no common factors among triples.at n=27A015646Number of 5-tuples of different integers from [ 2,n ] with no common factors among triples.at n=27A015649"CGK" (necklace, element, unlabeled) transform of 2,1,1,1,...at n=30A032157