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 A177676 #11 Aug 08 2018 20:58:03 %S A177676 1,1,70,34650,63063000,305540235000,3246670537110000, %T A177676 66471564122981413201,2389990877540259562671201, %U A177676 140752914446323991227575378870,12859891096524517937525915077936650,1745170838822213670914740929271388502150,339448526227710036385042441267361806617147750 %N A177676 Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, up, up, up, up, up. %H A177676 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 A177676 Cf. A014608. %K A177676 nonn %O A177676 0,3 %A A177676 _R. H. Hardin_, May 10 2010 %E A177676 a(9)-a(12) from _Alois P. Heinz_, Aug 08 2018