The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A106941 Primes of the form 4x^2-3xy+5y^2, with x and y nonnegative. 1
5, 43, 73, 131, 179, 229, 263, 367, 521, 569, 811, 953, 997, 1009, 1021, 1051, 1151, 1163, 1279, 1283, 1307, 1409, 1429, 1439, 1607, 1697, 1747, 1783, 1823, 2017, 2069, 2213, 2221, 2237, 2393, 2659, 2699, 2741, 2801, 2819, 3001, 3253, 3271 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Discriminant=-71.
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[4, -3, 5, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A038546 A022891 A106940 * A139885 A152866 A102851
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 May 12 20:41 EDT 2024. Contains 372494 sequences. (Running on oeis4.)