113037178808domain: NAppears in sequencesa(n) = (7^n - 1)/6.at n=14A023000a(n) = Sum_{j=0..13} n^j.at n=7A104376a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 15.at n=6A161025