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A152458 Numbers n that A064413(n) = n. 6
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

Table of n, a(n) for n=1..5.

PROG

(Haskell)

a152458 n = a152458_list !! (n-1)

a152458_list = [x | x <- [1..], a064413 x == x]

-- Reinhard Zumkeller, Sep 15 2014

CROSSREFS

Cf. A064413, A152519.

Cf. A247379.

Sequence in context: A091073 A266468 A154132 * A087971 A127919 A074092

Adjacent sequences:  A152455 A152456 A152457 * A152459 A152460 A152461

KEYWORD

nonn

AUTHOR

Artur Jasinski, Dec 05 2008

STATUS

approved

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Last modified February 23 08:36 EST 2019. Contains 320420 sequences. (Running on oeis4.)