1,1

2^(2*11-15)-15=113, 2^(2*19-15)-15=8388593, 2^(2*55-15)-15=39614081257132168796771975153, ...

q=15; For[i=q, i<=q, a={}; Do[x=2^(2*n-i)-i; If[PrimeQ[x], AppendTo[a, n]], {n, 10^2}]; Print["2^(2*n-", i, ")-", i, " ", a]; i=i+2]

Adjacent sequences: A138578 A138579 A138580 this_sequence A138582 A138583 A138584

Sequence in context: A067729 A058366 A120209 this_sequence A097363 A078893 A050704

nonn

Vladimir Orlovsky (4vladimir(AT)gmail.com), May 13 2008