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!)
A106888 Primes of the form x^2+xy+10y^2, with x and y nonnegative. 2

%I #17 Aug 05 2014 14:16:29

%S 43,103,139,181,277,367,439,523,547,607,673,751,823,997,1039,1063,

%T 1117,1153,1171,1231,1249,1381,1453,1459,1483,1693,1759,1933,1951,

%U 1993,1999,2011,2029,2131,2287,2311,2467,2473,2539,2557,2617,2833

%N Primes of the form x^2+xy+10y^2, with x and y nonnegative.

%C Discriminant=-39.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106888/b106888.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)

%t QuadPrimes2[1, 1, 10, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005

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 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)