The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A106885

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A106885

Primes of the form 2x^2+xy+5y^2, with x and y nonnegative.
(history; published version)

#17 by N. J. A. Sloane at Tue Aug 05 14:16:29 EDT 2014

MATHEMATICA

NON1234QuadPrimes2[2, 1, 5, 10000] (* see A106856 *)

Discussion

Tue Aug 05

14:16

OEIS Server: https://oeis.org/edit/global/2285

#16 by N. J. A. Sloane at Tue Aug 05 14:13:30 EDT 2014

MATHEMATICA

QuadPrimes2NON1234[2, 1, 5, 10000] (* see A106856 *)

Discussion

Tue Aug 05

14:13

OEIS Server: https://oeis.org/edit/global/2283

#15 by OEIS Server at Sun Jul 27 12:57:10 EDT 2014

LINKS

Vincenzo Librandi and Ray Chandler, <a href="/A106885/b106885_1.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]

#14 by Ray Chandler at Sun Jul 27 12:57:10 EDT 2014

STATUS

editing

approved

Discussion

Sun Jul 27

12:57

OEIS Server: Installed new b-file as b106885.txt.  Old b-file is now b106885_1.txt.

#13 by Ray Chandler at Sun Jul 27 12:57:06 EDT 2014

LINKS

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)

#12 by Ray Chandler at Sun Jul 27 12:56:48 EDT 2014

LINKS

Vincenzo Librandi, <a href="/A106885/b106885.txt">Table of n, a(n) for n = 1..1000</a>

Vincenzo Librandi and Ray Chandler, <a href="/A106885/b106885_1.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]

MATHEMATICA

QuadPrimes[2, 1, 5, 10000] (* see A106856 *) Note: the original QuadPrimes had a bug which could sometimes give wrong answers. This sequence should be checked (unless the coefficient of xy in the quadratic form is zero, in which case QuadPrimes gives correct answers). - N. J. A. Sloane, Jun 04 2014

QuadPrimes2[2, 1, 5, 10000] (* see A106856 *)

STATUS

approved

editing

#11 by N. J. A. Sloane at Mon Jun 16 11:28:31 EDT 2014

MATHEMATICA

Discussion

Mon Jun 16

11:28

OEIS Server: https://oeis.org/edit/global/2234

#10 by N. J. A. Sloane at Sun Jun 08 13:45:32 EDT 2014

STATUS

editing

approved

#9 by N. J. A. Sloane at Sun Jun 08 13:45:19 EDT 2014

LINKS

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)

STATUS

approved

editing

#8 by N. J. A. Sloane at Wed Jun 04 15:39:45 EDT 2014

MATHEMATICA

QuadPrimes[2, 1, 5, 10000] (* see A106856 *) Note: the original QuadPrimes had a bug which could sometimes give wrong answers. This sequence should be checked. - _N. J. A. Sloane_, Jun 04 2014

Discussion

Wed Jun 04

15:39

OEIS Server: https://oeis.org/edit/global/2225