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Search: id:A062403
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A062403 Primes of the form 2np+1 where p is prime. +0
1
5, 13, 31, 157, 239, 683, 1697, 3067, 4273, 5563, 6323, 6781, 9043, 13841, 16427, 22247, 22901, 23767, 27109, 32687, 33721, 45833, 58217, 61933, 83341, 90583, 94811, 115979, 158161, 172751, 193619, 202877, 221567, 284233, 297967, 308773 (list; graph; listen)
OFFSET

1,1

PROGRAM

(PARI) je=[]; for(n=0, 200, if(isprime(2*n*prime(n)+1), je=concat(je, 2*n*prime(n)+1), )); je

CROSSREFS

Adjacent sequences: A062400 A062401 A062402 this_sequence A062404 A062405 A062406

Sequence in context: A007708 A121129 A051402 this_sequence A066688 A046789 A066184

KEYWORD

easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 08 2001

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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