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A241666 Gives the value (either 0 or 1) that the trajectory of n under A241663 eventually reaches. 2
0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0

COMMENTS

a(n) = 1 for n = 1, 5, 25, 29, 125, 145, 149, 625, 725, 745, 841, ... - Alois P. Heinz, Apr 30 2014

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..65537

C. Defant, On Arithmetic Functions Related to Iterates of the Schemmel Totient Functions, J. Int. Seq. 18 (2015) # 15.2.1

Colin Defant, Python program

Index entries for characteristic functions

FORMULA

a(0) = 0, a(1) = 1, and for n > 1, a(n) = a(A241663(n)). - Antti Karttunen, Nov 05 2017

EXAMPLE

A241663(A241663(7))=0, so a(7)=0. A241663(A241663(A241663(29)))=1, so a(29)=1.

PROG

(Python) # The link above provides a Python program. Input m=4, as well as starting and ending values of n. The fourth string of numbers will be this sequence.

(Scheme, with memoization-macro definec)

(definec (A241666 n) (if (<= n 1) n (A241666 (A241663 n)))) ;; Antti Karttunen, Nov 05 2017

CROSSREFS

Sequence in context: A103588 A153638 A122415 * A324539 A324964 A285957

Adjacent sequences:  A241663 A241664 A241665 * A241667 A241668 A241669

KEYWORD

nonn

AUTHOR

Colin Defant, Apr 26 2014

EXTENSIONS

Term a(0)=0 prepended and more terms added by Antti Karttunen, Nov 05 2017

STATUS

approved

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Last modified May 16 21:28 EDT 2021. Contains 343951 sequences. (Running on oeis4.)