6686381534domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(195).at n=13A041362Chebyshev T-polynomials T(n,14) with Diophantine property.at n=7A09731064*n^7 - 112*n^5 + 56*n^3 - 7*n.at n=14A243133a(n) = T(n, 2*n), where T(n, x) is the Chebyshev polynomial of the first kind.at n=7A349071