58485domain: NAppears in sequencesExpansion of 1/((1-2x)(1-5x)(1-7x)(1-10x)).at n=4A025994Palindromes with exactly 4 distinct prime factors.at n=34A046394Number of nonnegative integers with property that their base 7/4 expansion (see A024641) has n digits.at n=17A245426