261152656domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(28).at n=13A041044Numerators of continued fraction convergents to sqrt(252).at n=13A041472a(n) = 16a(n-1) - a(n-2), starting with a(0) = 2 and a(1) = 16.at n=7A090727Numbers such that floor(a(n)^2 / 7) is a square.at n=23A204516