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A060425 Primes of form n*4^n - 1. 1
3, 31, 191, 5119, 524287, 3758096383, 1618481116086271, 5359447279004780799548150067050349330431, 2817103802133904744169307240538184064530443801964688726052818649087 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,12

MATHEMATICA

lst={}; Do[p=n*4^n-1; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 28 2009 *)

PROG

(PARI) { n=0; for (m=1, 530, if (isprime(a=m*4^m - 1), write("b060425.txt", n++, " ", a)); ) } \\ Harry J. Smith, Jul 04 2009

CROSSREFS

Sequence in context: A197892 A198009 A060416 * A203242 A121099 A197746

Adjacent sequences:  A060422 A060423 A060424 * A060426 A060427 A060428

KEYWORD

nonn

AUTHOR

Jason Earls, Apr 05 2001

EXTENSIONS

More terms from Reiner Martin (reinermartin(AT)hotmail.com), Jul 20 2001

STATUS

approved

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Last modified August 24 02:32 EDT 2019. Contains 326260 sequences. (Running on oeis4.)