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!)
A139509 Primes of the form x^2 + 29x*y + y^2 for x and y nonnegative. 1

%I #4 Jun 19 2014 15:30:52

%S 31,97,211,373,547,607,661,769,877,1051,1087,1123,1249,1279,1303,1423,

%T 1597,1657,1663,1693,1741,1777,1861,1867,2143,2179,2251,2341,2467,

%U 2539,2791,2857,3229,3259,3319,3331,3373,3511,3541,3643,3697,3769,3823,3877

%N Primes of the form x^2 + 29x*y + y^2 for x and y nonnegative.

%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 a = {}; w = 29; k = 1; Do[Do[If[PrimeQ[n^2 + w*n*m + k*m^2], AppendTo[a, n^2 + w*n*m + k*m^2]], {n, m, 400}], {m, 1, 400}]; Union[a] (*Artur Jasinski*)

%Y Cf. A139489, A007645, A068228, A007519, A033212, A033212, A107152, A107008, A033215, A107145, A139490, A139491.

%K nonn

%O 1,1

%A _Artur Jasinski_, Apr 24 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 27 15:27 EDT 2024. Contains 372019 sequences. (Running on oeis4.)