117663domain: NAppears in sequencesa(n+1) = a(n) converted to base 7 from base 3 (written in base 10).at n=5A023370Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 49.at n=6A031727Numbers k such that 4^k + 3 is prime.at n=33A089437