783000domain: NAppears in sequencesa(n) = n^4 - n^3.at n=30A085537a(n) = n*(n + 1)^3.at n=29A085540Numbers with at least three 3s in their prime signature.at n=12A176359Numbers that have exactly three exponents in their prime factorization that are equal to 3.at n=12A386802