76855

Appears in sequences

• Numbers k such that 209*2^k+1 is prime.at n=20A032481
• Consider a number n with m decimal digits. The sequence lists the numbers n having the prefix of length m-1 in the middle of the decimal expansion of prime(n).at n=32A242956
• Numbers k such that the Phi_3(10^10000+k) is prime, where Phi is a cyclic polynomial.at n=5A259631
• a(n) = n*F(n+1) - (n+1)*F(n), where F = A000045.at n=20A264147
• a(n) = (8*n^3 + 15*n^2 + 13*n)/6.at n=38A332698