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A050918 Woodall primes: primes of form n*2^n-1. 13
7, 23, 383, 32212254719, 2833419889721787128217599, 195845982777569926302400511, 4776913109852041418248056622882488319, 1307960347852357218937346147315859062783, 225251798594466661409915431774713195745814267044878909733007331390393510002687 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

Ray Ballinger, Woodall Primes: Definition and Status

C. K. Caldwell, Woodall Numbers

Eric Weisstein's World of Mathematics, Woodall Numbers

MATHEMATICA

Select[Table[n 2^n-1, {n, 300}], PrimeQ] (* Harvey P. Dale, Jul 12 2012 *)

CROSSREFS

Cf. A002234, A003261.

Sequence in context: A099051 A187487 A034192 * A228699 A159485 A009047

Adjacent sequences:  A050915 A050916 A050917 * A050919 A050920 A050921

KEYWORD

nonn,easy,nice

AUTHOR

N. J. A. Sloane, Dec 30 1999

STATUS

approved

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Last modified November 26 04:52 EST 2014. Contains 250017 sequences.