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 A136092 #23 Dec 16 2017 05:16:25
%S A136092 1,1,3,15,104,909,9449,112398,1489410,21562086,336086022,5577242292,
%T A136092 97671172836,1792348213025,34268124834495,679376016769260,
%U A136092 13911118850603610,293220749128031010
%N A136092 Bisection of A138540.
%H A136092 Juan B. Gil, Peter R. W. McNamara, Jordan O. Tirrell, Michael D. Weiner, <a href="https://arxiv.org/abs/1708.00513">From Dyck paths to standard Young tableaux</a>, arXiv:1708.00513 [math.CO], 2017.
%F A136092 a(n) = Sum_{j=0..n+1} 180*(2n)!*(2j+2)!*(2n-3j+2)/(j!*(j+1)!*(j+2)!*(j+4)!*(n-j+1)!*(n-j+3)!) (conjectured). - _Michael D. Weiner_, May 11 2016
%F A136092 36*(n-1)*(2*n-1)*(2*n-3)*a(n-2)-4*(2*n-1)*(5*n^2+22*n+15)*a(n-1)+(n+3)*(n+5)*(n+6)*a(n) = 0 (conjectured). - _Michael D. Weiner_, May 14 2016
%K A136092 nonn
%O A136092 0,3
%A A136092 _N. J. A. Sloane_, Mar 25 2008