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 A249679 #5 Nov 03 2014 23:34:54
%S A249679 0,129,381,501,639,963,1161,1371,1593,1851,2127,2427,3087,3447,3831,
%T A249679 4227,5589,6081,6870,10191,10887,12339,13101,13887,14697,15537,16401,
%U A249679 17283,18189,19113,22548,23592,25800,26940,28104,30504,31734,35568,36888,38238,39612,41022,42468,46191
%N A249679 Terms of A007504 divisible by 3.
%C A249679 Conjecture: a(n) ~ 4.5 n^2 log n. - _Charles R Greathouse IV_, Nov 03 2014
%H A249679 Charles R Greathouse IV, <a href="/A249679/b249679.txt">Table of n, a(n) for n = 1..10000</a>
%e A249679 a(2) = 129 = A007504(10), a(3) = 381 = A007504(16).
%o A249679 (PARI) print1(s=0); forprime(p=2,1e4,s+=p; if(s%3==0, print1(", "s))) \\ _Charles R Greathouse IV_, Nov 03 2014
%Y A249679 Intersection of A007504 and A008585. Cf. A007504, A008585, A024011, A045345, A128165, A189072.
%K A249679 nonn,easy
%O A249679 1,2
%A A249679 _Zak Seidov_, Nov 03 2014