16695376domain: NAppears in sequencesa(n) = 5th Chebyshev polynomial (first kind) evaluated at 2^n.at n=4A020539Numerators of continued fraction convergents to sqrt(255).at n=9A041478a(n) = 16*n^5 - 20*n^3 + 5*n.at n=16A243131Chebyshev T-polynomials T_n(16).at n=5A322888