60578domain: NAppears in sequencesNumbers n such that n | 7^n + 5^n + 3^n +1.at n=30A057830Number of nonempty subsets of {1, 2, ..., n} with <=9 pairwise coprime elements.at n=30A187270Number of n X 2 0..1 arrays with each 1 adjacent to 3 or 4 king-move neighboring 1s.at n=15A296109