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 A026101 #6 Sep 15 2019 19:56:45 %S A026101 1,5,15,34,68,118,186,279,400,563,754,998,1265,1614,2015,2468,3023, %T A026101 3610,4277,4980,5795,6734,7754,8847,10170,11502,13002,14661,16373, %U A026101 18150,20212,22351,24465,26949,29608,32312,35295,38459,41644,45192,48910,52858,56965,61291,65677 %N A026101 T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098. %K A026101 nonn %O A026101 1,2 %A A026101 _Clark Kimberling_ %E A026101 a(6) onward corrected by _Sean A. Irvine_, Sep 15 2019