94143178829domain: NAppears in sequencesa(n) = 2-(-3)^n.at n=23A081630Numbers of the form 3^n+2 which are not primes.at n=14A132830a(n) = 3^(2*n-1) + 2.at n=11A134752a(n) = 3^n + 2.at n=23A168607a(n) = floor( (3^n+1)^2/3^n ).at n=23A259821