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 A117550 #7 Apr 20 2018 17:58:02 %S A117550 324,350,352,408,444,448,490,495,500,513,572,592,620,732,740,765,790, %T A117550 804,819,884,954,975,988,996,1010,1085,1107,1136,1206,1208,1215,1225 %N A117550 Indices of Fibonacci numbers with 16 distinct prime factors. %H A117550 Blair Kelly, <a href="http://mersennus.net/fibonacci/">Fibonacci and Lucas Factorizations</a>. %e A117550 F(324) = 2^4 * 3^5 * 17 * 19 * 53 * 107 * 109 * 2269 * 3079 * 4373 * 5779 * 19441 * 11128427 * 62650261 * 1828620361 * 6782976947987 has 16 distinct prime factors, so 324 is in the sequence. %Y A117550 Cf. A114823-A114826, A114836-A114841, A117551. %Y A117550 Column k=16 of A303217. %K A117550 hard,more,nonn %O A117550 1,1 %A A117550 _Ryan Propper_, Apr 26 2006 %E A117550 a(25)-a(32) from _Max Alekseyev_, Aug 18 2013