61882domain: NAppears in sequencesNumbers whose set of base-13 digits is {2,3}.at n=30A032813a(n) in base 13 is a repdigit.at n=50A048337Numbers n such that 117*2^n-1 is prime.at n=51A050584Partial sums of A003418.at n=12A173185a(n) = sigma(2*n^4) - sigma(n^4).at n=12A224903Numbers n such that A277118(n) = 17.at n=14A277119