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 A297496 #6 Jan 01 2018 10:59:49 %S A297496 1,2,5,12,28,66,154,348,762,1645,3569,7849,17418,38588,84611,183135, %T A297496 392475,838029,1793945,3863537,8369150,18177363,39421917,85087021, %U A297496 182500928,389187036,826803475,1754407220,3726873592,7935854531,16936911839,36183082043 %N A297496 Right edge of triangle A297495. %H A297496 Lars Blomberg, <a href="/A297496/b297496.txt">Table of n, a(n) for n = 0..1000</a> %Y A297496 Cf. A297495. %K A297496 nonn %O A297496 0,2 %A A297496 _N. J. A. Sloane_, Dec 31 2017 %E A297496 Terms a(7) and beyond from _Lars Blomberg_, Jan 01 2018