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Revision History for A078164

(Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A078164 Numbers k such that phi(k) is a perfect biquadrate.
(history; published version)
#45 by Charles R Greathouse IV at Sun Jun 02 08:50:10 EDT 2024
STATUS

editing

approved

#44 by Charles R Greathouse IV at Sun Jun 02 08:50:07 EDT 2024
CROSSREFS

Subsequence of A039770. A037896 is a subsequence.

STATUS

approved

editing

#43 by Amiram Eldar at Tue Mar 07 14:37:45 EST 2023
STATUS

reviewed

approved

#42 by Michel Marcus at Tue Mar 07 14:29:18 EST 2023
STATUS

proposed

reviewed

#41 by Bernard Schott at Tue Mar 07 13:54:40 EST 2023
STATUS

editing

proposed

#40 by Bernard Schott at Tue Mar 07 13:53:24 EST 2023
CROSSREFS

Sequences where phi(k) is a perfect power: A039770 (square), A039771 (cube), A078164 (4th, this sequence (4th), A078165 (5th), A078166 (6th), A078167 (7th), A078168 (8th), A078169 (9th), A078170 (10th).

STATUS

proposed

editing

Discussion
Tue Mar 07 13:54 
Bernard Schott: Deleted autoreference A078164 in Xrefs.
#39 by Michel Marcus at Sun Mar 05 13:35:41 EST 2023
STATUS

editing

proposed

Discussion
Sun Mar 05 16:48 
Bernard Schott: Yes, ok, thanks.
#38 by Michel Marcus at Sun Mar 05 13:35:34 EST 2023
COMMENTS

AsA013776 is a subsequence since phi(2^(4*n+1)) = (2^n)^4, A013776 is a subsequence. - Bernard Schott, Sep 22 2022

STATUS

proposed

editing

Discussion
Sun Mar 05 13:35 
Michel Marcus: ok ?
#37 by Bernard Schott at Sun Mar 05 12:48:53 EST 2023
STATUS

editing

proposed

#36 by Bernard Schott at Sun Mar 05 12:45:17 EST 2023
COMMENTS

Subsequence of primes is A037896 sincèrementsince in this case : phi(k^4+1) = k^4. - Bernard Schott, Mar 05 2023

Discussion
Sun Mar 05 12:48 
Bernard Schott: Comment for subsequence of primes.

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Last modified August 19 03:19 EDT 2024. Contains 375284 sequences. (Running on oeis4.)