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 A161574 #7 Mar 11 2014 01:32:32 %S A161574 3,9,8,81,18,729,30,100,80,59049,72,531441,320,324,168,43046721,252, %T A161574 387420489,336,1600,5120,31381059609,420,10000,20480,1764,1344, %U A161574 22876792454961,1008,205891132094649,1080,25600,327680,11664,1440 %N A161574 a(n) = the second smallest positive integer with exactly n divisors. %C A161574 Second column of A073915. [From _R. J. Mathar_, Jun 16 2009] %Y A161574 A005179 %K A161574 nonn %O A161574 2,1 %A A161574 _Leroy Quet_, Jun 14 2009 %E A161574 Extended by _R. J. Mathar_, Jun 16 2009