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A050529
Primes of form 11*2^n+1.
4
23, 89, 353, 1409, 5767169, 23068673, 96757023244289, 26596368031521841843535873, 467888254516290387262140085218681290753, 1871553018065161549048560340874725163009, 9050275065266633231852330504065427777405047260984689248417349633
OFFSET
1,1
MATHEMATICA
Select[11*2^Range[210]+1, PrimeQ] (* Harvey P. Dale, Jun 15 2017 *)
CROSSREFS
For more terms see A002261.
Sequence in context: A158537 A117049 A142062 * A215613 A306138 A317371
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 29 1999
STATUS
approved