Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A137461
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A137461 Positive numbers n such that n^3 +- (n-1) are primes. +0
1
4, 7, 10, 15, 21, 25, 39, 52, 87, 120, 129, 139 (list; graph; listen)
OFFSET

1,1

EXAMPLE

7^3 +- 6 -> (337,349) Primes,

139^3 +- 138 -> (2685481,2685757) Primes

MATHEMATICA

Select[Range[999], PrimeQ[ #^3-(#-1)]&&PrimeQ[ #^3+(#-1)]&]

CROSSREFS

Sequence in context: A126891 A095875 A071408 this_sequence A137379 A096676 A092863

Adjacent sequences: A137458 A137459 A137460 this_sequence A137462 A137463 A137464

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 21 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 December 3 01:16 EST 2008. Contains 151161 sequences.


AT&T Labs Research