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Revision History for A053194

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

Showing entries 1-10 | older changes
A053194 a(n) is the smallest number k such that cototient(k) = 2n - 1.
(history; published version)
#41 by Bruno Berselli at Fri Nov 18 02:29:16 EST 2016
STATUS

reviewed

approved

#40 by Peter Luschny at Fri Nov 18 01:29:02 EST 2016
STATUS

proposed

reviewed

#39 by Peter Luschny at Fri Nov 18 01:28:56 EST 2016
STATUS

editing

proposed

#38 by Peter Luschny at Fri Nov 18 01:28:03 EST 2016
FORMULA

a(n) < (2n-1)^2 for n > 3 (byif the Goldbach conjecture holds). - Thomas Ordowski, Oct 07 2016

STATUS

proposed

editing

#37 by Thomas Ordowski at Sun Nov 13 02:48:01 EST 2016
STATUS

editing

proposed

Discussion
Sun Nov 13 04:06
Jon E. Schoenfield: Or maybe "(if the Goldbach conjecture holds)"?
#36 by Thomas Ordowski at Sun Nov 13 02:46:58 EST 2016
FORMULA

Conjecture: a(n) < (2n-1)^2 for n > 3. - _ (by Goldbach conjecture). - _Thomas Ordowski_, Oct 07 2016

Discussion
Sun Nov 13 02:47
Thomas Ordowski: OK?
#35 by Danny Rorabaugh at Sat Nov 12 20:48:00 EST 2016
STATUS

proposed

editing

#34 by Michel Marcus at Thu Oct 13 11:01:58 EDT 2016
STATUS

editing

proposed

Discussion
Sat Nov 12 20:48
Danny Rorabaugh: It would be useful, then, to add that as a parenthetical comment with your conjecture.
#33 by Michel Marcus at Thu Oct 13 11:01:52 EDT 2016
COMMENTS

Problem: areAre there infinitely many semiprimes in the sequence? - Thomas Ordowski, Oct 07 2016

STATUS

proposed

editing

#32 by Thomas Ordowski at Tue Oct 11 02:08:06 EDT 2016
STATUS

editing

proposed

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Last modified September 11 11:35 EDT 2024. Contains 375827 sequences. (Running on oeis4.)