Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A058781
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A058781 Numbers n such that n^2 * 2^n - 1 is prime. +0
1
3, 7, 25, 41, 45, 63, 83, 131, 147, 175, 425, 449, 469, 651, 1345, 1839, 1883, 1913, 2177, 2551, 2907, 3675, 6071, 11743, 14641, 38685, 40857, 47761, 97243 (list; graph; listen)
OFFSET

1,1

LINKS

Steven Harvey, Generalized HyperWoodall Primes

MATHEMATICA

Do[ If[ PrimeQ[ n^2*2^n - 1 ], Print[n] ], {n, 1, 5000} ]

CROSSREFS

Sequence in context: A042657 A031875 A118718 this_sequence A100462 A130463 A124425

Adjacent sequences: A058778 A058779 A058780 this_sequence A058782 A058783 A058784

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 02 2001

EXTENSIONS

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.


AT&T Labs Research