706073841203domain: NAppears in sequencesa(n) = (5*3^(n-1)+1)/2.at n=24A057198a(0)=3, a(n) = 3*a(n-1) + 2*(-1)^n.at n=24A096019a(n) = (5*9^n + 1)/2.at n=12A135423