7588770domain: NAppears in sequencesNumber of site swap patterns with 2 balls and exact period n.at n=16A065178Quotients (3^p - 2^p - 1)/p, where p = prime(n).at n=6A127071a(n) = floor((3^n - 2^n)/n).at n=16A191694Inverse Weigh transform of 3^(n-1).at n=16A383035