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