%I #6 Apr 09 2017 12:34:06
%S 1,2,3902496
%N a(n) is the smallest number m such that pi(m)+sigma(m)=n*m.
%C Next term is greater than 135*10^7.
%C a(4) > 4*10^12.  _Giovanni Resta_, Apr 09 2017
%e a(3)=3902496 because pi(3902496)+sigma(3902496)=3*3902496 and 3902496 is the smallest such number.
%K hard,more,nonn,less,bref
%O 1,2
%A _Farideh Firoozbakht_, Apr 11 2008
