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!)
A140031 Primes of the form 7x^2+264y^2. 1

%I #16 Sep 08 2022 08:45:34

%S 7,271,439,607,1063,1231,1399,1447,2239,2287,2383,2551,2719,2791,3079,

%T 3559,3583,3967,4231,4567,4639,4759,4903,5407,5431,6079,6151,6247,

%U 6607,6991,7927,8263,8599,8623,8839,9103,9127,9511,9631,9679,10111

%N Primes of the form 7x^2+264y^2.

%C Discriminant=-7392. See A139827 for more information.

%H Vincenzo Librandi and Ray Chandler, <a href="/A140031/b140031.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]

%H N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)

%F Except for 7, the primes are congruent to {271, 391, 439, 535, 607, 703, 871, 943, 1063, 1207, 1231, 1399, 1447, 1711, 1735} (mod 1848).

%t QuadPrimes2[7, 0, 264, 10000] (* see A106856 *)

%o (Magma) [7] cat [ p: p in PrimesUpTo(12000) | p mod 1848 in {271, 391, 439, 535, 607, 703, 871, 943, 1063, 1207, 1231, 1399, 1447, 1711, 1735} ]; // _Vincenzo Librandi_, Aug 06 2012

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 02 2008

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 April 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)