174837

Appears in sequences

• G.f.: (1-x+sqrt(1-2*x-3*x^2))/(1-3*x+x^2+x^3+(1-x^2)*sqrt(1-2*x-3*x^2)).at n=14A244886
• Difference between 3^n and the product of primes less than or equal to n.at n=11A319852