1,1
Ray Ballinger, Proth Search Page
Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime
Sequence in context: A203356 A140633 A142400 * A188946 A177752 A101746
Adjacent sequences: A032457 A032458 A032459 * A032461 A032462 A032463
nonn,hard
N. J. A. Sloane (njas(AT)research.att.com).