59973

Appears in sequences

• Numbers k such that 3*2^k + 1 is prime.at n=32A002253
• Numerators of increasingly better rational approximations to Pi with increasing denominators (3/1, 13/4, 16/5, 19/6, 22/7, 179/57, ...)at n=36A063674
• Select all integers from the list (p(k)-k)/tau(k), k>=1; p = A000041, tau = A000005.at n=20A141669
• 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=24A268657
• 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=13A268658
• 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=11A282943