613274669041domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(108).at n=26A041194Numerators of continued fraction convergents to sqrt(243).at n=22A041454Numerators of continued fraction convergents to sqrt(972).at n=20A042880a(n) = 4*a(n-1) - a(n-2) with a(0)=1, a(1)=8.at n=20A055845