343904160606domain: NAppears in sequencesa(n) = 12*a(n-1) - a(n-2).at n=11A023038Numerators of continued fraction convergents to sqrt(35).at n=21A041058a(n)*a(n+3) - a(n+1)*a(n+2) = 5, given a(0)=a(1)=1, a(2)=6.at n=22A080875a(n) = Cosh[(2 n - 1) ArcCosh[n]].at n=6A173130