Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A032474
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A032474 Numbers n such that 195*2^n+1 is prime. +0
1
4, 8, 13, 14, 20, 31, 38, 70, 80, 86, 110, 125, 140, 170, 179, 230, 338, 365, 374, 517, 860, 944, 1045, 1270, 1861, 3623, 4414, 10448, 27766, 30836, 34666, 39826, 55763, 59260, 70228, 71590, 76618 (list; graph; listen)
OFFSET

1,1

LINKS

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

CROSSREFS

Sequence in context: A137337 A061517 A058759 this_sequence A103024 A131041 A081843

Adjacent sequences: A032471 A032472 A032473 this_sequence A032475 A032476 A032477

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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 December 2 11:54 EST 2009. Contains 167921 sequences.


AT&T Labs Research