The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A138031 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A138031

a(n) = prime(n)^13.
(history; published version)

#16 by Charles R Greathouse IV at Thu Sep 08 08:45:33 EDT 2022

PROG

(MAGMAMagma) [p^13: p in PrimesUpTo(100)]; // Vincenzo Librandi, Mar 27 2014

Discussion

Thu Sep 08

08:45

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

#15 by Joerg Arndt at Sun Jan 24 02:14:02 EST 2021

STATUS

reviewed

approved

#14 by Michel Marcus at Sun Jan 24 01:54:55 EST 2021

STATUS

proposed

reviewed

#13 by Amiram Eldar at Sun Jan 24 01:45:03 EST 2021

STATUS

editing

proposed

#12 by Amiram Eldar at Sun Jan 24 01:39:10 EST 2021

FORMULA

From Amiram Eldar, Jan 24 2021: (Start)

Product_{n>=1} (1 + 1/a(n)) = zeta(13)/zeta(26).

Product_{n>=1} (1 - 1/a(n)) = 1/zeta(13) = 1/A013671. (End)

CROSSREFS

Cf. A000040, A013671.

STATUS

approved

editing

#11 by Alois P. Heinz at Sun Jul 26 18:47:09 EDT 2020

STATUS

editing

approved

#10 by Alois P. Heinz at Sun Jul 26 18:47:01 EDT 2020

NAME

Primea(n) = prime(n)^13.

CROSSREFS

Cf. A000040.

STATUS

approved

editing

#9 by Bruno Berselli at Thu Mar 27 03:20:10 EDT 2014

STATUS

proposed

approved

#8 by Michel Marcus at Thu Mar 27 03:19:16 EDT 2014

STATUS

editing

proposed

#7 by Michel Marcus at Thu Mar 27 03:19:01 EDT 2014

CROSSREFS

Subsequence of A010801.

STATUS

proposed

editing