19976430247domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(250).at n=17A041468Numerators of continued fraction convergents to sqrt(490).at n=15A041934Numerators of continued fraction convergents to sqrt(1000).at n=23A042936x-values in the solutions to x^2 - 10*y^2 = 9.at n=19A228209