%I
%S 20,24,26,30,40,42,52,74,78,80,88,113,119,127,163,177,179,187,205,207,
%T 242,248,254,258,260,262,268,270,280,282,284,288,297,311,331,357,368,
%U 372,380,394,398,400,410,412,416,428,436,443,457,466,468,470,474,490,496,505,509
%N Numbers n such that 9 divides prime(1)+...+prime(n).
%t Flatten[Position[Accumulate[Prime[Range[509]]]/9,_Integer]] (* _Jayanta Basu_, May 18 2013 *)
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Nov 05 2005
