A050529 Primes of the form 11*2^k + 1.

23, 89, 353, 1409, 5767169, 23068673, 96757023244289, 26596368031521841843535873, 467888254516290387262140085218681290753, 1871553018065161549048560340874725163009, 9050275065266633231852330504065427777405047260984689248417349633

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Formula

a(n) = A083683(A002261(n)). - Elmo R. Oliveira, May 04 2025

Mathematica

Select[11*2^Range[210]+1, PrimeQ] (* Harvey P. Dale, Jun 15 2017 *)

Crossrefs

For more terms see A002261.

Cf. A083683.

Sequence in context: A158537 A117049 A142062 * A215613 A306138 A317371

Adjacent sequences: A050526 A050527 A050528 * A050530 A050531 A050532

Keyword

nonn

Author

N. J. A. Sloane, Dec 29 1999

Status

approved