%I #12 Mar 30 2012 18:35:18

%S 1,2,2,2,2,4,4,2,4,4,2,4,4,8,4,2,2,8,10,4,8,4,7,4,2,8,10,8,3,8,4,2,4,

%T 4,8,8,10,20,8,4,2,16,7,4,8,14,3,4,7,4,4,8,4,20,4,8,20,6,3,8,4,8,16,2,

%U 8,8,19,4,14,16,3,8,10,20,4,20,8,16,10,4,16,4,10,16,4,14,6,4,7,16,16,14,8,6,20

%N Number of cycles of function f(x) = x^10 mod n.

%C Not multiplicative; the smallest counterexample is a(667). - _T. D. Noe_, Nov 14 2006

%H David W. Wilson, <a href="/A023161/b023161.txt">Table of n, a(n) for n=1..10000</a>

%Y Cf. A023153

%Y Cf. A023153-A023160 (cycles of the functions f(x)=x^k mod n for k=2..9)

%K nonn

%O 1,2

%A _David W. Wilson_