170471domain: NAppears in sequencesComposites which use less than all of their digits in their prime factorization.at n=25A074211"Printer's errors" of second kind (trivial multiples of 10 omitted).at n=0A116890a(n) = [x^n] Product_{k>=1} (1 + n^(k-1)*x^k).at n=7A340103Expansion of Product_{k>=1} (1 + 7^(k-1)*x^k).at n=7A344066