709968

Appears in sequences

• Numbers k such that 3*2^k + 1 is prime.at n=39A002253
• E.g.f.: 1/sqrt(1+x^2 - 2*x*cosh(x)).at n=8A205570
• Numbers k such that 3*2^k + 1 is a prime factor of a generalized Fermat number 3^(2^m) + 1 for some m.at n=30A268657
• Numbers k such that 3*2^k + 1 is a prime factor of a generalized Fermat number 5^(2^m) + 1 for some m.at n=16A268658
• Numbers k such that 3*2^k + 1 is a prime factor of a generalized Fermat number 7^(2^m) + 1 for some m.at n=12A282943