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A160216 Primes congruent to 2^k+1 (mod 2^(k+1)), where k is any odd integer >=1. 4
3, 7, 11, 19, 23, 31, 41, 43, 47, 59, 67, 71, 73, 79, 83, 89, 97, 103, 107, 127, 131, 137, 139, 151, 163, 167, 179, 191, 199, 211, 223, 227, 233, 239, 251, 263, 271, 281, 283, 307, 311, 313, 331, 347, 353, 359, 367, 379, 383, 409, 419, 431, 439, 443, 457, 463 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Lim_{x -> inf.} the number of terms < x in A160216/A160215 => 2. - Robert G. Wilson v, May 31 2009
LINKS
FORMULA
{prime(k) : A023506(k) is odd}. - R. J. Mathar, May 08 2009
MATHEMATICA
fQ[n_] := Mod[ Flatten[ FactorInteger[n - 1]] [[2]], 2] == 1; Select[ Prime@ Range@ 90, fQ@# &] (* Robert G. Wilson v, May 31 2009 *)
CROSSREFS
Sequence in context: A179481 A131426 A080978 * A181516 A285015 A002145
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, May 04 2009
EXTENSIONS
Edited by R. J. Mathar, May 08 2009
More terms from Robert G. Wilson v, May 31 2009
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)