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 A276230 #10 Aug 25 2016 19:30:14
%S A276230 1,2,4,12,36,144,720,3600,25200,176400,1587600,17463600,192099600,
%T A276230 2497294800,32464832400,551902150800,9382336563600,178264394708400,
%U A276230 3387023499459600,77901540487570800,1791735431214128400,44793385780353210000,1299008187630243090000
%N A276230 a(n) is the A106490 index where n first occurs.
%e A276230 0, 1, 2, and 3 first appear in A106490 at positions 1, 2, 4, and 12, respectively.
%t A276230 a[n_] := a[n] = If[n == 1, 0, Sum[1 + a[i[[2]]], {i, FactorInteger[n]}]];
%t A276230 Flatten@ Table[FirstPosition[#, k_ /; k == n], {n, 0, 9}] &@ Table[a[n], {n, 10^6}] (* _Michael De Vlieger_, Aug 25 2016, Version 10, after _Jean-François Alcover_ at A106490 *)
%Y A276230 Cf. A106490.
%K A276230 nonn
%O A276230 0,2
%A A276230 _Hans Havermann_, Aug 24 2016
%E A276230 More terms from _Alois P. Heinz_, Aug 25 2016