45462domain: NAppears in sequencesIntegers n not of form 3m+1 such that for any integer k>0, n*10^k-1 has a divisor in the set { 7, 11, 13, 37 }.at n=8A243974Integers n where n^3 + (n+1)^3 is a Taxicab number A001235.at n=17A259836