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 A324703 #8 Mar 11 2019 20:48:53
%S A324703 3,6,14,26,44,66,102,126,170,194,216,318,326,506,558,560,626,702,846,
%T A324703 966,1014,1076,1182,1314,1322,1586,1626,1850,2112,2162,2198,2510,2526,
%U A324703 2786,2796,3126,3506,3618,4050,4058,4122,4226,4344,4640,4826,5066,5298,5376
%N A324703 Lexicographically earliest sequence containing 3 and all positive integers n such that the prime indices of n - 1 already belong to the sequence.
%C A324703 A self-describing sequence, similar to A304360.
%C A324703 A prime index of n is a number m such that prime(m) divides n. The multiset of prime indices of n is row n of A112798.
%F A324703 a(n) = A324702(n) + 1.
%t A324703 aQ[n_]:=Switch[n,0,False,3,True,_,And@@Cases[FactorInteger[n-1],{p_,k_}:>aQ[PrimePi[p]]]];
%t A324703 Select[Range[0,1000],aQ]
%Y A324703 Prime indices of A324702.
%Y A324703 Cf. A000002, A000720, A001222, A001462, A007097, A045965, A055396, A061395, A064989, A079000, A079254, A109298, A112798, A276625, A277098, A304360.
%Y A324703 Cf. A324694, A324695, A324696, A324697, A324698, A324699, A324700, A324701, A324704, A324705.
%K A324703 nonn
%O A324703 1,1
%A A324703 _Gus Wiseman_, Mar 11 2019