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 A082127 #9 Mar 11 2015 07:43:18 %S A082127 3,3,3,2,3,7,8,12,18,27,43,62,93,142,213,317,478,717,1073,1612,2418 %N A082127 Rounded base-3 logarithm of A082126(n). %o A082127 (PARI) p=19; for(n=1, 50, v=divisors(p); r=sqrt(p); t=0; for(k=1, matsize(v)[2], if(v[k]>=r, t=k; break)); if(v[t]^2==p, u=t, u=t-1); if(v[t]-v[u]<2, u=u-1; t=t+1); print1(round(log(v[t]-v[u])/log(3))", "); p=p*(v[t]-v[u])) %Y A082127 Cf. A082129. %K A082127 nonn,hard %O A082127 0,1 %A A082127 _Ralf Stephan_, Apr 04 2003