Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A154686
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A154686 Number n such that n^3+2*n^2+n+1 is prime +0
2
1, 2, 4, 5, 7, 12, 13, 20, 23, 25, 27, 28, 32, 33, 34, 35, 39, 42, 44, 47, 48, 49, 50, 54, 57, 75, 79, 82, 88, 89, 92, 5, 98, 99, 100, 103 (list; graph; listen)
OFFSET

1,2

EXAMPLE

For n=2, n^3+2*n^2+n+1=19; n=20, n^3+2*n^2+n+1=8821

CROSSREFS

Sequence in context: A050134 A010065 A090649 this_sequence A165196 A007062 A121817

Adjacent sequences: A154683 A154684 A154685 this_sequence A154687 A154688 A154689

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 19 2009

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 November 24 23:16 EST 2009. Contains 167481 sequences.


AT&T Labs Research