login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A106936 Primes of the form 3x^2-2xy+6y^2, with x and y nonnegative. 1
3, 7, 23, 71, 79, 131, 139, 227, 283, 347, 379, 419, 479, 487, 499, 503, 571, 607, 619, 683, 691, 719, 743, 823, 827, 839, 947, 991, 1031, 1051, 1091, 1151, 1163, 1231, 1303, 1319, 1439, 1451, 1459, 1499, 1559, 1567, 1627, 1723, 1831, 2003, 2011 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Discriminant=-68.
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, -2, 6, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A331685 A029891 A151454 * A088704 A341072 A148702
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 | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)