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%I #9 Feb 05 2021 18:01:50
%S 11,15,17,19,21,27,29,31,37,49,71,79,83,85,95,99,101,103,107,109,111,
%T 115,119,121,135,155,159,161,163,169,171,177,181,183,185,201,205,209,
%U 213,235,237,239,247,255,257,259,261,263,273,275,279,283,285,287,305,309,317,319
%N Numbers n such that 8 divides prime(1)+...+prime(n).
%H Michael De Vlieger, <a href="/A111322/b111322.txt">Table of n, a(n) for n = 1..10000</a>
%t Position[Accumulate@ Prime@ Range@ 320, _?(Mod[#, 8] == 0 &)][[All, 1]] (* _Michael De Vlieger_, Feb 05 2021 *)
%o (PARI) isok(n) = !(vecsum(primes(n)) % 8); \\ _Michel Marcus_, Feb 05 2021
%Y Cf. A007504.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Nov 05 2005
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