A107831 - OEIS

%I #2 Mar 30 2012 17:26:16

%S 11,2,6,5,7,4,12,9,1,10,8,13,14,15,19,18,20,21,16,3,17,22,24,23,27,26,

%T 28,25,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,

%U 50,51,52,53,54,55,56,57,58,59,60,61

%N Indices of primes occurring in A107811.

%F A107831(n)=pi(A107811(n))

%Y Cf. A107801 - A107814, A107821, A107822, A107823, A107824, A107825, A107826, A107827, A107828, A107829, A107830, A107832, A107833, A107834.

%K easy,nonn

%O 1,1

%A _Zak Seidov_, May 24 2005