Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A139898
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A139898 Primes of the form 4x^2+4xy+61y^2. +0
1
61, 109, 181, 229, 349, 421, 541, 661, 709, 829, 1021, 1069, 1381, 1429, 1549, 1621, 1669, 1741, 1789, 1861, 2029, 2221, 2269, 2341, 2389, 2749, 3061, 3109, 3181, 3229, 3301, 3469, 3541, 3709, 4021, 4261, 4549, 4621, 4789, 4861, 4909, 5101 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-960. See A139827 for more information.

FORMULA

The primes are congruent to {61, 109} (mod 120).

CROSSREFS

Sequence in context: A141919 A141301 A107152 this_sequence A140009 A140372 A142512

Adjacent sequences: A139895 A139896 A139897 this_sequence A139899 A139900 A139901

KEYWORD

nonn,easy

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 02 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 16:57 EST 2008. Contains 151279 sequences.


AT&T Labs Research