A098392 - OEIS

%I #3 Mar 30 2012 18:50:45

%S 2,3,4,6,10,12,15,17,21,27,29,35,39,41,45,51,57,59,65,69,71,77,81,87,

%T 95,99,101,105,107,111,125,129,135,137,147,149,155,161,165,171,177,

%U 179,189,191,195,197,209,221,225,227,231,237,239,249,254,260,266,268,274,278

%N Prime(n)-Log2(Log2(prime(n))), where Log2=A000523.

%C a(n) = A000040(n) - A098391(n).

%e a(10) = A000040(10) - A098391(10) = 29 - 2 = 27.

%Y Cf. A098390, A014689, A098386, A098389.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Sep 06 2004