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 A026951 #9 Oct 18 2019 04:03:40 %S A026951 1,2,6,34,116,678,2438,14494,53538,321590,1207186,7301142,27702096, %T A026951 168359754,643682106,3926147730,15096518580,92338836390,356629256930, %U A026951 2186194166950,8473375581420,52037098259090,202271610937570,1244063987615130,4847394356321770,29851422385561898 %N A026951 Self-convolution of array T given by A026386. %K A026951 nonn %O A026951 0,2 %A A026951 _Clark Kimberling_ %E A026951 More terms from _Sean A. Irvine_, Oct 17 2019