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 A241776 #3 Apr 28 2014 11:20:34 %S A241776 1,3,17,69,322,1408,6440,29555,139005,662522,3228150,15994167, %T A241776 80849918,415684406,2177223330,11594426886,62826444538,345909306526, %U A241776 1935762918301,10999013559517,63460591709283,371497097807233,2206388300667674,13286470507994738 %N A241776 Number of standard Young tableaux with n cells and exactly five successions. %C A241776 A succession is a pair of cells (v, v+1) lying in the same row. %C A241776 Also number of ballot sequences having five flat steps. %Y A241776 Column k=5 of A238125. %K A241776 nonn %O A241776 6,2 %A A241776 _Joerg Arndt_ and _Alois P. Heinz_, Apr 28 2014