The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A373362 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A373362

a(n) = gcd(A001414(n), A276085(n)), where A001414 is the sum of prime factors with repetition, and A276085 is the primorial base log-function.
(history; published version)

#17 by Michael De Vlieger at Mon Jun 03 08:54:01 EDT 2024

STATUS

proposed

approved

#16 by Antti Karttunen at Mon Jun 03 04:35:41 EDT 2024

STATUS

editing

proposed

#15 by Antti Karttunen at Mon Jun 03 04:35:22 EDT 2024

CROSSREFS

Cf. A001414, A002110, A276085, A373373 (positions of multiples of 3).

Cf. A345452 (apparently gives the positions of even terms), A373373 (positions of multiples of 3).

#14 by Antti Karttunen at Mon Jun 03 04:30:48 EDT 2024

CROSSREFS

Cf. A345452 (apparently gives the positions of even terms).

#13 by Antti Karttunen at Mon Jun 03 04:29:29 EDT 2024

CROSSREFS

Cf. also A082299, A373361, A373363, A373367.

STATUS

proposed

editing

#12 by Antti Karttunen at Mon Jun 03 02:10:26 EDT 2024

STATUS

editing

proposed

#11 by Antti Karttunen at Mon Jun 03 02:09:22 EDT 2024

COMMENTS

As A001414 and A276085 are both fully additive sequences, all sequences that give the positions of multiples of some k > 1 in this sequence are closed under multiplication, for : For example, A373373, which gives the indices of multiples of 3.

#10 by Antti Karttunen at Mon Jun 03 02:07:58 EDT 2024

COMMENTS

As A001414 and A276085 are both fully additive sequences, all sequences that give the positions of multiples of some k > 1 in this sequence are closed under multiplication, for example, A373373, which gives the indices of multiples of 3.

CROSSREFS

Cf. A001414, A002110, A276085, A373373 (positions of multiples of 3).

STATUS

approved

editing

#9 by OEIS Server at Sun Jun 02 17:34:27 EDT 2024

LINKS

Antti Karttunen, <a href="/A373362/b373362_1.txt">Table of n, a(n) for n = 1..65537</a>

#8 by Michael De Vlieger at Sun Jun 02 17:34:27 EDT 2024

STATUS

proposed

approved

Discussion

Sun Jun 02

17:34

OEIS Server: Installed first b-file as b373362.txt.