The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A201713 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A201713

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

#6 by Charles R Greathouse IV at Thu Sep 08 08:46:01 EDT 2022

PROG

(MAGMAMagma) [a: n in [2..300] | IsPrime(a) where a is 2*n^2-5];

Discussion

Thu Sep 08

08:46

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

#5 by Russ Cox at Fri Mar 30 18:38:26 EDT 2012

AUTHOR

_Vincenzo Librandi (vincenzo.librandi(AT)tin.it), _, Dec 04 2011

Discussion

Fri Mar 30

18:38

OEIS Server: https://oeis.org/edit/global/215

#4 by Bruno Berselli at Sun Dec 04 05:13:06 EST 2011

STATUS

proposed

approved

#3 by Vincenzo Librandi at Sun Dec 04 03:39:34 EST 2011

STATUS

editing

proposed

#2 by Vincenzo Librandi at Sun Dec 04 03:39:28 EST 2011

NAME

allocated for Vincenzo LibrandiPrimes of the form 2n^2 - 5.

DATA

3, 13, 67, 157, 283, 643, 877, 1453, 3037, 4603, 5197, 5827, 7933, 8707, 12163, 14107, 17293, 18427, 19597, 30253, 34843, 38083, 41467, 56443, 58477, 62653, 66973, 71437, 83227, 93307, 95917, 98563, 103963, 109507, 118093, 123997

OFFSET

1,1

LINKS

Vincenzo Librandi, <a href="/A201713/b201713.txt">Table of n, a(n) for n = 1..5000</a>

MATHEMATICA

Select[Table[2n^2-5, {n, 2, 1000}], PrimeQ]

PROG

(MAGMA) [a: n in [2..300] | IsPrime(a) where a is 2*n^2-5];

KEYWORD

allocated

nonn,easy

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 04 2011

STATUS

approved

editing

#1 by Vincenzo Librandi at Sun Dec 04 01:16:08 EST 2011

NAME

allocated for Vincenzo Librandi

KEYWORD

allocated

STATUS

approved