The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A154577 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A154577

Primes of the form 2n^2+14n+5.
(history; published version)

#22 by Charles R Greathouse IV at Thu Sep 08 08:45:40 EDT 2022

PROG

(MAGMAMagma) [a: n in [0..300] | IsPrime(a) where a is 2*n^2+14*n+5]; // Vincenzo Librandi, Jul 23 2012

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#21 by Bruno Berselli at Fri Apr 10 05:16:45 EDT 2015

STATUS

editing

approved

#20 by Bruno Berselli at Fri Apr 10 05:16:33 EDT 2015

PROG

(PARI) (for (n=0, 300, if (isprime (k=2*n^2+14*n+5), print1 (k, ", ")))) ; \\ Vincenzo Librandi, Jul 23 2012

STATUS

approved

editing

#19 by Bruno Berselli at Fri Apr 10 05:15:38 EDT 2015

STATUS

proposed

approved

#18 by Michel Marcus at Fri Apr 10 05:02:29 EDT 2015

STATUS

editing

proposed

#17 by Michel Marcus at Fri Apr 10 05:01:07 EDT 2015

PROG

(PARI) (for (n=0, 300, if (isprime (k=2*n^2+14*n+5), print1 (k, “, “", ")))) ; // _\\ _Vincenzo Librandi_, Jul 23 2012

CROSSREFS

Cf. A007528, A040117; , A154576.

EXTENSIONS

a(30)=66593 inserted, definition corrected and edited by Omar E. Pol, Aug 05 2009, Aug 06 2009.

STATUS

proposed

editing

Discussion

Fri Apr 10

05:02

Michel Marcus: Hi Vincenzo, if you find some, in these edits, can you also edit pari code like I did

#16 by Vincenzo Librandi at Fri Apr 10 04:31:48 EDT 2015

STATUS

editing

proposed

#15 by Vincenzo Librandi at Fri Apr 10 04:31:34 EDT 2015

COMMENTS

2*a(n) + 39 is a square. - Vincenzo Librandi, Apr 10 2015

STATUS

approved

editing

#14 by Bruno Berselli at Wed Jun 18 04:43:13 EDT 2014

STATUS

editing

approved

#13 by Bruno Berselli at Wed Jun 18 04:43:09 EDT 2014

COMMENTS

Subsequence of A007528, A040117. [Bruno Berselli, Jun 18 2014]

CROSSREFS

Cf. A007528, A040117; A154576.

STATUS

approved

editing