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 A177635 #10 Aug 08 2018 22:19:04 %S A177635 1,1,20,1680,369600,168168000,137225088000,182499151015439, %T A177635 369333660414653745,1080107104118231632500,4384231121059173932562000, %U A177635 23913914175434871142808715000,170693577054027116430454774306800,1559452501977701854639515593122328400 %N A177635 Number of permutations of 3 copies of 1..n avoiding adjacent step pattern up, up, up, up, up, up. %H A177635 Mingjia Yang, Doron Zeilberger, <a href="https://arxiv.org/abs/1805.06077">Increasing Consecutive Patterns in Words</a>, arXiv:1805.06077 [math.CO], 2018. %Y A177635 Cf. A014606. %K A177635 nonn %O A177635 0,3 %A A177635 _R. H. Hardin_, May 10 2010 %E A177635 a(10)-a(13) from _Alois P. Heinz_, Aug 08 2018