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!)
A139853 Primes of the form 11x^2+6xy+11y^2. 2
11, 43, 67, 107, 163, 179, 211, 331, 347, 379, 443, 491, 499, 547, 571, 659, 683, 739, 827, 883, 907, 947, 1019, 1051, 1163, 1171, 1187, 1283, 1451, 1499, 1523, 1579, 1619, 1667, 1723, 1747, 1787, 2003, 2011, 2027, 2083, 2179, 2251, 2339, 2347 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Discriminant=-448. See A139827 for more information.
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)
FORMULA
The primes are congruent to {11, 43, 51} (mod 56).
MATHEMATICA
Union[QuadPrimes2[11, 6, 11, 10000], QuadPrimes2[11, -6, 11, 10000]] (* see A106856 *)
PROG
(Magma) [ p: p in PrimesUpTo(3000) | p mod 56 in {11, 43, 51}]; // _Vincenzao Librandi_, Jul 29 2012
CROSSREFS
Sequence in context: A226617 A222184 A141195 * A023299 A031904 A305708
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 | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)