login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A106901 Primes of the form 3x^2+3xy+5y^2, with x and y nonnegative. 2
3, 5, 11, 23, 29, 41, 131, 167, 173, 197, 233, 269, 311, 317, 347, 401, 419, 431, 449, 479, 503, 617, 641, 653, 677, 683, 743, 821, 827, 839, 857, 887, 911, 929, 947, 983, 1013, 1031, 1049, 1061, 1151, 1187, 1193, 1217, 1367, 1433, 1439, 1451, 1493 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-51.

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

MATHEMATICA

QuadPrimes2[3, 3, 5, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A018110 A227806 A015915 * A154550 A023202 A049436

Adjacent sequences:  A106898 A106899 A106900 * A106902 A106903 A106904

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified October 23 14:38 EDT 2014. Contains 248465 sequences.