180708869880domain: NAppears in sequencesa(n) = 10*a(n-1) - a(n-2) with a(0) = 0, a(1) = 2.at n=12A001078Denominators of continued fraction convergents to sqrt(6).at n=23A041007Possibly the only integers of the form sqrt(m^2*(m^2-1)*2/3) [only checked for the first 5 terms].at n=6A072818