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Revision History for A139974 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
Primes of the form 13x^2+40y^2.
(history; published version)
#16 by Charles R Greathouse IV at Thu Sep 08 08:45:34 EDT 2022
PROG

(MAGMAMagma) [13] cat [p: p in PrimesUpTo(6000) | p mod 520 in [53, 77, 133, 157, 173, 237, 277, 373, 413, 477, 493, 517]]; // Vincenzo Librandi, Aug 03 2012

Discussion
Thu Sep 08
08:45
OEIS Server: https://oeis.org/edit/global/2944
#15 by OEIS Server at Tue Aug 12 16:51:06 EDT 2014
LINKS

Vincenzo Librandi and Ray Chandler, <a href="/A139974/b139974_1.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]

#14 by Ray Chandler at Tue Aug 12 16:51:06 EDT 2014
STATUS

editing

approved

Discussion
Tue Aug 12
16:51
OEIS Server: Installed new b-file as b139974.txt.  Old b-file is now b139974_1.txt.
#13 by Ray Chandler at Tue Aug 12 16:51:02 EDT 2014
LINKS

Vincenzo Librandi, and Ray Chandler, <a href="/A139974/b139974_1.txt">Table of n, a(n) for n = 1..10000</a> [First 1000</a> terms from Vincenzo Librandi]

STATUS

approved

editing

#12 by N. J. A. Sloane at Tue Aug 05 14:15:35 EDT 2014
MATHEMATICA

QuadPrimesQuadPrimes2[13, 0, 40, 10000] (* see A106856 *)

Discussion
Tue Aug 05
14:15
OEIS Server: https://oeis.org/edit/global/2284
#11 by N. J. A. Sloane at Tue Aug 05 14:12:16 EDT 2014
MATHEMATICA

QuadPrimes[13, 0, 40, 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

QuadPrimes[13, 0, 40, 10000] (* see A106856 *)

Discussion
Tue Aug 05
14:12
OEIS Server: https://oeis.org/edit/global/2282
#10 by N. J. A. Sloane at Thu Jun 19 23:04:56 EDT 2014
STATUS

editing

approved

#9 by N. J. A. Sloane at Thu Jun 19 23:04:53 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 Mon Jun 16 11:28:57 EDT 2014
MATHEMATICA

QuadPrimes[13, 0, 40, 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

Discussion
Mon Jun 16
11:28
OEIS Server: https://oeis.org/edit/global/2234
#7 by N. J. A. Sloane at Wed Jun 04 15:39:59 EDT 2014
MATHEMATICA

QuadPrimes[13, 0, 40, 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