26460874447domain: NAppears in sequencesPositive integer values of n such that 6*n^2-5 is a square.at n=21A080806a(n)*a(n+3) - a(n+1)*a(n+2) = 5, given a(0)=a(1)=1, a(2)=3.at n=22A080874a(n) = 10*a(n-1) - a(n-2) for n >= 2 with a(0) = 1 and a(1) = 3.at n=11A140780Denominators of the other-side convergents to sqrt(6).at n=21A259594