1709401domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(34).at n=14A041057a(n) = ((2*n+1)^4+1)/2.at n=21A175110Hypotenuses of primitive Pythagorean triples in A195577 and A195578.at n=9A195579Markoff spectrum N^(2)(Lambda).at n=22A293174