login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

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

%I #5 Mar 30 2012 17:20:56

%S 0,0,1,1,2,1,3,3,3,1,4,3,5,3,3,5,6,5,7,5,4,5,8,7,8,5,8,5,9,7,10,10,6,

%T 7,7,9,11,7,6,9,12,9,13,9,11,9,14,13,14,13,9,10,15,14,11,12,9,11,16,

%U 14,17,12,14,17,12,13,18,13,12,15,19,18,20,15,18,14,16,15,21,19,21,16

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

%Y Cf. A014665, A039776.

%K nonn

%O 1,5

%A _Olivier GĂ©rard_