This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A109790 #17 Jul 06 2024 04:42:27
%S A109790 1,3,5,7,9,15,19,33,47,49,51,55,63,73,97,105,117,119,131,165,189,195,
%T A109790 223,229,243,245,253,257,263,273,277,291,295,297,329,331,357,367,371,
%U A109790 389,391,395,397,399,445,487,497,551,577,603,605,637,641,643,683,685
%N A109790 Numbers k such that A083186(k) is prime.
%H A109790 Amiram Eldar, <a href="/A109790/b109790.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Harvey P. Dale)
%t A109790 Select[Range[2000], PrimeQ[Sum[Prime[Prime[i]], {i, 1, #}]] &] (* _Stefan Steinerberger_, Jun 23 2007 *)
%t A109790 Flatten[Position[Accumulate[Prime[Prime[Range[800]]]],_?PrimeQ]] (* _Harvey P. Dale_, Jun 24 2012 *)
%Y A109790 Cf. A006450, A083186, A126144.
%K A109790 nonn
%O A109790 1,2
%A A109790 _N. J. A. Sloane_, Jun 11 2007
%E A109790 More terms from _Stefan Steinerberger_, Jun 23 2007