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 A124682 #5 Aug 23 2016 20:51:14 %S A124682 2,3,6,13,29,71,173,444,1148,3030,8059,21715,58836,160687,441083, %T A124682 1217134,3372386,9380948,26180962,73292358,205731862,578922864, %U A124682 1632707684,4614098810,13064064882,37052720050,105257568244,299452309023,853094139960,2433439189419 %N A124682 a(n) = A002861(n) + A000081(n). %Y A124682 See A126285. %K A124682 nonn %O A124682 1,1 %A A124682 _N. J. A. Sloane_, Dec 26 2006