The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A106897 Primes of the form 2x^2+xy+6y^2, with x and y nonnegative. 1
 2, 59, 61, 157, 173, 283, 379, 431, 601, 613, 647, 683, 739, 827, 941, 967, 991, 1087, 1129, 1181, 1217, 1367, 1399, 1553, 1657, 1753, 1823, 1951, 2069, 2179, 2251, 2293, 2311, 2357, 2371, 2609, 2617, 2687, 2753, 2801, 2903, 3067, 3119, 3251 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Discriminant=-47. 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[2, 1, 6, 10000] (* see A106856 *) CROSSREFS Sequence in context: A113635 A136095 A181866 * A244269 A195325 A195329 Adjacent sequences:  A106894 A106895 A106896 * A106898 A106899 A106900 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 20 05:25 EST 2020. Contains 331067 sequences. (Running on oeis4.)