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A152458 Numbers n that A064413(n) = n. 9
1, 2, 8, 40, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Conjecture: This sequence is finite.
Contribution from Artur Jasinski, Dec 08 2008: (Start)
The EKG sequence A064413 has 3 critical lines.
Numbers which belong to the critical lines:
(1) A064413(n)=n see A152458,
(3/2) 2*A064413(n)=3n see A152519,
(1/2) 2*A064413(n)=n has only 2 numbers {10, 14}.
Because points are concentrated on the plot of EKG sequence near these 3 critical lines, the number of points belonging to critical lines is surprisingly low.
Is this sequence complete? (End)
Also fixed points of A247379. - Reinhard Zumkeller, Sep 15 2014
LINKS
PROG
(Haskell)
a152458 n = a152458_list !! (n-1)
a152458_list = [x | x <- [1..], a064413 x == x]
-- Reinhard Zumkeller, Sep 15 2014
CROSSREFS
Cf. A247379.
Sequence in context: A326963 A306781 A154132 * A087971 A127919 A366478
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 05 2008
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)