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 A026116 #8 Sep 16 2019 22:01:05 %S A026116 1,7,44,259,1509,8767,50973,296907,1733150,10138970,59435705, %T A026116 349085651,2053897585,12103791975,71432963850,422138418075, %U A026116 2497699796394,14794839261958,87725376843892,520654743222562,3092804089136541,18386738886807495,109390940367285906,651267699186002859 %N A026116 T(2n,n+1), where T is the array defined in A026105. %Y A026116 Cf. A026105. %K A026116 nonn %O A026116 1,2 %A A026116 _Clark Kimberling_ %E A026116 More terms from _Sean A. Irvine_, Sep 16 2019