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 A297186 #6 Jan 01 2018 11:00:27 %S A297186 1,3,10,25,61,152,344,755,1633,3566,7844,17409,38572,84583,183130, %T A297186 392467,838016,1793923,3863499,8369084,18177361,39421910,85087006, %U A297186 182500900,389186986,826803387,1754407066,3726873588,7935854525,16936911826,36183082015,77225453397 %N A297186 Row sums of triangle A297495. %H A297186 Lars Blomberg, <a href="/A297186/b297186.txt">Table of n, a(n) for n = 0..1000</a> %Y A297186 Cf. A297186. %K A297186 nonn %O A297186 0,2 %A A297186 _N. J. A. Sloane_, Dec 31 2017 %E A297186 Terms a(6) and beyond from _Lars Blomberg_, Jan 01 2018