OFFSET
1,1
COMMENTS
a(n)=1 if and only if n is odd or n = 2. - Robert Israel, May 31 2018
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
Different from A069177, analogous sequence with totient, instead of cototient.
MAPLE
f:= n -> padic:-ordp(n - numtheory:-phi(n), 2):
map(f, [$1..100]); # Robert Israel, May 31 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Apr 28 2003
STATUS
approved