77965

Appears in sequences

• Numbers n such that 3*4^n - 1 is prime.at n=25A272057
• Expansion of Product_{k>=1} 1/((1 - x^k) * (1 - x^(2*k)) * (1 - x^(3*k)) * (1 - x^(4*k)) * (1 - x^(5*k))).at n=26A327044