This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A139894 Primes of the form 4x^2+4xy+59y^2. 2
 59, 67, 83, 107, 139, 179, 227, 283, 347, 419, 499, 523, 547, 571, 587, 643, 683, 691, 787, 811, 883, 1019, 1051, 1283, 1427, 1451, 1459, 1483, 1499, 1531, 1571, 1579, 1619, 1747, 1811, 1907, 1979, 2083, 2179, 2203, 2267, 2371, 2411, 2459, 2539 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Discriminant=-928. See A139827 for more information. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 FORMULA The primes are congruent to {35, 51, 59, 67, 83, 91, 107, 115, 123, 139, 179, 187, 219, 227} (mod 232). MATHEMATICA QuadPrimes[4, -4, 59, 10000] (* see A106856 *) PROG (MAGMA) [p: p in PrimesUpTo(3000) | p mod 232 in [35, 51, 59, 67, 83, 91, 107, 115, 123, 139, 179, 187, 219, 227]]; // Vincenzo Librandi, Jul 31 2012 CROSSREFS Sequence in context: A172056 A032648 A033237 * A048988 A087766 A096339 Adjacent sequences:  A139891 A139892 A139893 * A139895 A139896 A139897 KEYWORD nonn,easy AUTHOR T. D. Noe, May 02 2008 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .