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 A026297 #6 Sep 24 2019 21:19:11 %S A026297 1,1,1,2,5,9,27,46,145,244,796,1330,4438,7382,25034,41508,142479, %T A026297 235672,816620,1348204,4706977,7759105,27256963,44873972,158450461, %U A026297 260581699,924129535,1518390034,5404960900,8873524820,31689099660,51988770150 %N A026297 a(n) = T(n,[ n/2 ]), where T is the array in A026268. %K A026297 nonn %O A026297 0,4 %A A026297 _Clark Kimberling_ %E A026297 a(12) corrected by _Sean A. Irvine_, Sep 24 2019