This site is supported by donations to The OEIS Foundation.

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A106939 Primes of the form 4x^2+3xy+5y^2, with x and y nonnegative. 2
 5, 79, 167, 359, 373, 577, 617, 877, 881, 947, 1213, 1223, 1231, 1567, 1741, 1861, 1889, 2179, 2347, 2381, 2521, 2539, 2633, 2789, 2843, 3203, 3433, 3659, 3701, 3719, 3823, 4049, 4051, 4127, 4297, 4549, 4871, 4973, 4999, 5297, 5477, 5507 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Discriminant=-71. 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[4, 3, 5, 10000] (* see A106856 *) CROSSREFS Sequence in context: A015973 A136578 A057186 * A142114 A023148 A200986 Adjacent sequences:  A106936 A106937 A106938 * A106940 A106941 A106942 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.