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 A084685 #6 Oct 15 2013 22:32:02
%S A084685 2,4,6,14,22,115,55,105,155,145,341,501,489,143,437,301,395,665
%N A084685 a(n) is the least x such that length of fixed-point-list when function-A085307[] was iterated and started at a(n) equals n.
%e A084685 Some lists of iterated values started at a(n):
%e A084685 n=1: a(1)=first prime; n=2: a(2)=first true prime factor;
%e A084685 n=3: a(3)=first 2^j.3^i number, that is 6;
%e A084685 n=5: {22,112,72,32,2}
%e A084685 n=12: length=a(12); iv=501; fixed-point=1354674597313; list as follows
%e A084685 {501, 1673, 2397, 47173, 293237, 2571637, 23593109, 273116353, 522211523, 8866073119, 57914987307, 1354674597313}
%Y A084685 Cf. A085307, A085308, A085309, A085317-A085323.
%K A084685 base,nonn
%O A084685 1,1
%A A084685 _Labos Elemer_, Jul 16 2003