The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A347463 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A347463

Number of ordered factorizations of n with integer alternating product.
(history; published version)

#14 by OEIS Server at Sun Jul 28 10:05:43 EDT 2024

LINKS

Antti Karttunen, <a href="/A347463/b347463_1.txt">Table of n, a(n) for n = 1..16384</a>

#13 by Michael De Vlieger at Sun Jul 28 10:05:43 EDT 2024

STATUS

proposed

approved

Discussion

Sun Jul 28

10:05

OEIS Server: Installed first b-file as b347463.txt.

#12 by Antti Karttunen at Sun Jul 28 09:36:38 EDT 2024

STATUS

editing

proposed

#11 by Antti Karttunen at Sun Jul 28 05:06:41 EDT 2024

LINKS

<a href="/index/Eu#epf">Index entries for sequences computed from exponents in factorization of n</a>

#10 by Antti Karttunen at Sun Jul 28 04:51:31 EDT 2024

LINKS

Antti Karttunen, <a href="/A347463/b347463_1.txt">Table of n, a(n) for n = 1..16384</a>

#9 by Antti Karttunen at Sun Jul 28 04:48:34 EDT 2024

DATA

1, 1, 1, 2, 1, 1, 1, 3, 2, 1, 1, 4, 1, 1, 1, 7, 1, 4, 1, 4, 1, 1, 1, 6, 2, 1, 3, 4, 1, 1, 1, 11, 1, 1, 1, 18, 1, 1, 1, 6, 1, 1, 1, 4, 4, 1, 1, 20, 2, 4, 1, 4, 1, 6, 1, 6, 1, 1, 1, 8, 1, 1, 4, 26, 1, 1, 1, 4, 1, 1, 1, 35, 1, 1, 4, 4, 1, 1, 1, 20, 7, 1, 1, 8, 1, 1, 1, 6, 1, 8, 1, 4, 1, 1, 1, 32, 1, 4, 4, 18

PROG

(PARI) A347463(n, m=n, ap=1, e=0) = if(1==n, if(e%2, 1==denominator(ap), 1==numerator(ap)), sumdiv(n, d, if(d>1, A347463(n/d, d, ap * d^((-1)^e), 1-e)))); \\ Antti Karttunen, Jul 28 2024

EXTENSIONS

Data section extended up to a(100) by Antti Karttunen, Jul 28 2024

STATUS

approved

editing

#8 by Susanna Cuyler at Wed Oct 27 22:23:11 EDT 2021

STATUS

proposed

approved

#7 by Gus Wiseman at Sun Oct 10 07:12:51 EDT 2021

STATUS

editing

proposed

#6 by Gus Wiseman at Sun Oct 10 00:17:00 EDT 2021

FORMULA

a(n) = A347048(n) + A347049(n).

STATUS

proposed

editing

#5 by Gus Wiseman at Sat Oct 09 23:36:18 EDT 2021

STATUS

editing

proposed