The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A335385

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Showing entries 1-10 | older changes

A335385

The number of tri-unitary divisors of n.
(history; published version)

#16 by Michel Marcus at Mon Dec 18 01:42:15 EST 2023

STATUS

reviewed

approved

#15 by Joerg Arndt at Mon Dec 18 01:03:17 EST 2023

STATUS

proposed

reviewed

#14 by Amiram Eldar at Mon Dec 18 00:53:37 EST 2023

STATUS

editing

proposed

#13 by Amiram Eldar at Mon Dec 18 00:27:07 EST 2023

LINKS

Pentti Haukkanen, <a href="https://www.fq.math.ca/Scanned/38-5/haukkanen.pdf">On the k-ary convolution of arithmetical functions</a>, The Fibonacci Quarterly, Vol. 38, No. 5 (2000) , pp. 440-445.

#12 by Amiram Eldar at Mon Dec 18 00:26:47 EST 2023

PROG

(PARI) a(n) = vecprod(apply(x -> if(x == 3 || x == 6, 4, 2), factor(n)[, 2])); \\ Amiram Eldar, Dec 18 2023

KEYWORD

nonn,easy,mult

STATUS

approved

editing

#11 by Joerg Arndt at Sat Jun 06 03:18:54 EDT 2020

STATUS

proposed

approved

#10 by Amiram Eldar at Sat Jun 06 03:17:31 EDT 2020

STATUS

editing

proposed

#9 by Amiram Eldar at Sat Jun 06 03:13:33 EDT 2020

LINKS

Amiram Eldar, <a href="/A335385/b335385.txt">Table of n, a(n) for n = 1..10000</a>

STATUS

approved

editing

#8 by Susanna Cuyler at Fri Jun 05 09:58:09 EDT 2020

STATUS

proposed

approved

#7 by Amiram Eldar at Thu Jun 04 17:51:15 EDT 2020

STATUS

editing

proposed