10097891domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 2^n + 3^n + 6^n.at n=9A074528Numerators of sum_{k=1..n} 1/k^9 = Zeta(9,n).at n=2A103351Expansion of (1-8*x+14*x^2)/((1-2*x)*(1-3*x)*(1-6*x)).at n=10A246985a(n) = (n!)^9 * Sum_{i=1..n} 1/i^9.at n=3A291507Prime numbersat n=670686