Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A106905
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A106905 Primes of the form 2x^2+2xy+7y^2, with x and y nonnegative. +0
2
2, 7, 11, 19, 31, 47, 67, 71, 83, 151, 223, 227, 239, 271, 307, 359, 379, 383, 431, 463, 479, 487, 499, 587, 619, 631, 643, 683, 691, 739, 743, 839, 863, 947, 967, 983, 1019, 1051, 1087, 1151, 1163, 1259, 1279, 1307, 1319, 1367, 1399, 1423, 1451, 1471 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-52. See A106856 for more information.

MATHEMATICA

QuadPrimes[2, 2, 7, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A023393 A084619 A106906 this_sequence A103802 A097159 A139603

Adjacent sequences: A106902 A106903 A106904 this_sequence A106906 A106907 A106908

KEYWORD

nonn,easy

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 09 2005

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 25 20:09 EST 2009. Contains 167514 sequences.


AT&T Labs Research