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 A179302 #7 Aug 28 2016 18:23:42
%S A179302 0,1,2,3,4,5,10,11,12,18,19,20,29,30,31,32,36,37,39,43,55,56,61,62,65,
%T A179302 72,77,104,142,154,169,191,197,200,229,258,267,276,375,407,408,411,
%U A179302 412,437,440,456,539,597,607,621,629,653,660,663,724,742,743,759,760,768
%N A179302 Indices of primes occurring in A034050.
%H A179302 Dmitry Kamenetsky, <a href="/A179302/b179302.txt">Table of n, a(n) for n = 0..1000</a>
%t A179302 Flatten[Position[Sort[Flatten[Table[FromDigits/@Permutations[Join[{3},PadRight[{},n,1]]],{n,0,50}]]],_?PrimeQ]]-1 (* _Harvey P. Dale_, Jul 16 2012 *)
%Y A179302 Cf. A034050, A107689, A179303.
%K A179302 nonn
%O A179302 0,3
%A A179302 _Dmitry Kamenetsky_, Jul 10 2010