The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A322702 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A322702

a(n) is the product of primes p such that p+1 divides n.
(history; published version)

#35 by Susanna Cuyler at Sat Jan 12 20:46:17 EST 2019

STATUS

proposed

approved

#34 by Antti Karttunen at Sat Jan 12 18:19:36 EST 2019

STATUS

editing

proposed

#33 by Antti Karttunen at Sat Jan 12 09:20:50 EST 2019

FORMULA

A001221(a(n)) = A072627(n). - Antti Karttunen, Jan 12 2019

#32 by Antti Karttunen at Sat Jan 12 09:18:08 EST 2019

CROSSREFS

Cf. A072627, A027760, A322356, A323156.

#31 by Antti Karttunen at Sat Jan 12 09:15:06 EST 2019

LINKS

Antti Karttunen, <a href="/A322702/b322702.txt">Table of n, a(n) for n = 1..10080</a>

STATUS

approved

editing

#30 by Bruno Berselli at Thu Jan 10 02:53:44 EST 2019

STATUS

reviewed

approved

#29 by Michel Marcus at Thu Jan 10 02:06:53 EST 2019

STATUS

proposed

reviewed

#28 by Michel Marcus at Tue Jan 08 01:38:23 EST 2019

STATUS

editing

proposed

Discussion

Tue Jan 08

05:03

Daniel Suteu: Yes, Michel. Thank you.

#27 by Michel Marcus at Tue Jan 08 01:38:09 EST 2019

COMMENTS

a(2*n + 1) = 2, iff n == 1 (mod 3).

a(2*n + 1) = 1, otherwise.

FORMULA

a(2*n + 1) = 2, iff n == 1 (mod 3), else a(2*n + 1) = 1.

STATUS

proposed

editing

Discussion

Tue Jan 08

01:38

Michel Marcus: ok ?

#26 by Michael De Vlieger at Mon Jan 07 22:12:03 EST 2019

STATUS

editing

proposed