login
Number of new fractions m/n, where m is 1 or composite, (m,n) = 1 and "new" means the value of mn has not occurred before.
2

%I #6 Mar 30 2012 17:20:56

%S 1,1,1,1,2,1,3,1,3,2,6,1,7,2,4,3,10,1,11,1,5,4,14,1,12,5,10,3,19,1,20,

%T 6,9,7,13,2,25,7,10,5,28,1,29,5,8,9,32,3,28,5,14,7,37,3,18,9,16,13,42,

%U 1,43,12,15,15,21,2,48,10,20,4,51,4,52,15,12,11,30,2,57,8,33,18,60,1

%N Number of new fractions m/n, where m is 1 or composite, (m,n) = 1 and "new" means the value of mn has not occurred before.

%Y Cf. A014665, A039775, A048864.

%K nonn

%O 1,5

%A _Olivier GĂ©rard_