Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A106931
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A106931 Primes of the form 4x^2+4xy+5y^2, with x and y nonnegative. +0
2
5, 13, 29, 53, 61, 149, 157, 173, 181, 229, 269, 277, 293, 317, 389, 397, 421, 461, 541, 557, 613, 653, 661, 709, 733, 773, 821, 829, 853, 877, 941, 997, 1013, 1061, 1093, 1109, 1117, 1213, 1229, 1301, 1373, 1429, 1549, 1597, 1621, 1637, 1693 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-64. See A106856 for more information.

MATHEMATICA

QuadPrimes[4, 4, 5, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A100438 A129371 A130230 this_sequence A078370 A005473 A086732

Adjacent sequences: A106928 A106929 A106930 this_sequence A106932 A106933 A106934

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