3168060domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(99).at n=11A041179Numbers k such that 99*k^2 + 1 is a square.at n=6A075843a(n) = 32*n^5 - 32*n^3 + 6*n.at n=10A242850a(n) = U(n, 2*n), where U(n, x) is the Chebyshev polynomial of the second kind.at n=5A349075