OFFSET
1,18
COMMENTS
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
MATHEMATICA
Differences[Array[Length[FixedPointList[EulerPhi, #]] &, 100, 0]] (* Paolo Xausa, Aug 18 2024 *)
PROG
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Apr 18 2020
STATUS
approved