The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A023216

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Primes p such that 4*p + 9 is also prime.
(history; published version)

#21 by Charles R Greathouse IV at Thu Sep 08 08:44:47 EDT 2022

PROG

(MAGMA) [n: n in [0..1000] | IsPrime(n) and IsPrime(4*n+9)]; // Vincenzo Librandi, Nov 19 2010

Discussion

Thu Sep 08

08:44

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

#20 by Alois P. Heinz at Fri Feb 12 20:44:25 EST 2021

STATUS

proposed

#19 by Jon E. Schoenfield at Fri Feb 12 20:18:18 EST 2021

STATUS

editing

#18 by Jon E. Schoenfield at Fri Feb 12 20:18:14 EST 2021

NAME

Numbers n such that n and 4n + 9 are both prime.

STATUS

approved

#17 by Joerg Arndt at Sun Feb 02 10:21:24 EST 2014

STATUS

reviewed

#16 by Michael B. Porter at Sun Feb 02 10:04:25 EST 2014

STATUS

proposed

#15 by Michel Marcus at Sun Feb 02 03:35:15 EST 2014

STATUS

editing

#14 by Michel Marcus at Sun Feb 02 03:35:11 EST 2014

NAME

Numbers n such that n and 4n + 9 both prime.

STATUS

proposed

#13 by Vincenzo Librandi at Sun Feb 02 03:24:01 EST 2014

STATUS

editing

#12 by Vincenzo Librandi at Sun Feb 02 03:23:39 EST 2014

LINKS

MATHEMATICA

PROG

(MAGMA) [n: n in [0..1000] | IsPrime(n) and IsPrime(4*n+9)] [From Vincenzo Librandi,

Nov 19 2010]

KEYWORD

nonn

STATUS

approved