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 A086141 #2 Mar 31 2012 13:23:37 %S A086141 1,2,4,6,8,12,36,30,16,24,72,60,216,180,900,210,32,48,144,120,432,360, %T A086141 1800,420,1296,1080,5400,1260,27000,6300,44100,2310,64,96,288,240,864, %U A086141 720,3600,840,2592,2160,10800,2520,54000,12600,88200,4620,7776,6480 %N A086141 Permutation of A025487 (least prime signatures) which, when values are factored, exhibit self-similarity (cf. A008687). %e A086141 Factored sequences are %e A086141 1 %e A086141 0 2 0 3 0 3 0 5 0 3 0 5 0 5 0 7 ... %e A086141 0 0 4 2 0 0 9 3 0 0 9 3 0 0 25 5 ... %e A086141 0 0 0 0 8 4 4 2 0 0 0 0 27 9 9 3 ... %e A086141 0 0 0 0 0 0 0 0 16 8 8 4 8 4 4 2 ... %e A086141 yielding %e A086141 1 2 4 6 8 12 36 30 16 24 72 60 216 180 900 210 ... %Y A086141 Cf. A008687, A080801. %K A086141 nonn %O A086141 1,2 %A A086141 _Alford Arnold_, Aug 24 2003