457652254domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(500).at n=17A041954Numerators of continued fraction convergents to sqrt(980).at n=17A042896Sum of Lucas numbers and reflected Lucas numbers (comment to A061084).at n=40A075091Denominators of A178381(4*n+1)/A178381(4*n).at n=20A179132