The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A031368 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A031368

Odd-indexed primes: a(n) = prime(2n-1).
(history; published version)

#51 by Charles R Greathouse IV at Thu Sep 08 08:44:50 EDT 2022

PROG

(MAGMAMagma) [ NthPrime(2*n-1): n in [1..1000] ]; // Vincenzo Librandi, Apr 11 2011

Discussion

Thu Sep 08

08:44

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

#50 by N. J. A. Sloane at Sun Nov 07 00:24:31 EDT 2021

STATUS

editing

approved

#49 by N. J. A. Sloane at Sun Nov 07 00:24:29 EDT 2021

CROSSREFS

Cf. A000040, A031215 (even-indexed primes), A005408.

Cf. A005408.

First differences are A155067.

STATUS

approved

editing

#48 by Peter Luschny at Tue Jul 20 13:24:32 EDT 2021

STATUS

reviewed

approved

#47 by Robert Munafo at Tue Jul 20 13:18:03 EDT 2021

STATUS

proposed

reviewed

#46 by Michel Marcus at Tue Jul 20 12:48:38 EDT 2021

STATUS

editing

proposed

#45 by Michel Marcus at Tue Jul 20 12:48:25 EDT 2021

COMMENTS

a(n) = A219603(n) / A000040(n). - Reinhard Zumkeller, Nov 25 2012

FORMULA

a(n) = A219603(n) / A000040(n). - Reinhard Zumkeller, Nov 25 2012

STATUS

proposed

editing

#44 by Jianing Song at Tue Jul 20 12:26:56 EDT 2021

STATUS

editing

proposed

#43 by Jianing Song at Tue Jul 20 12:26:44 EDT 2021

NAME

Odd -indexed primes: a(n) = prime(2n-1).

STATUS

approved

editing

Discussion

Tue Jul 20

12:26

Jianing Song: Typo.

#42 by Peter Luschny at Fri Jun 04 02:34:59 EDT 2021

STATUS

proposed

approved