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 A169934 #8 Apr 28 2024 17:27:25 %S A169934 0,0,0,1,5,66,392,4859,34659,482272,4099634,65762489,653977909, %T A169934 12026621478,137361430156,2862534403223,36968414699239, %U A169934 862935261673212,12440701298168534,321935664074780549,5126628962937663529,145768013651370381026,2541561479354892816304 %N A169934 Number of permutations of 1..n with the number moved left exceeding the number moved right by 2. %Y A169934 Column k=2 (or k=-2) of A062866. %Y A169934 Equal number moved left and right, see A062868. %K A169934 nonn %O A169934 1,5 %A A169934 _R. H. Hardin_, Jul 19 2010 %E A169934 a(19)-a(20) from _Alois P. Heinz_, Jul 31 2018 %E A169934 a(21)-a(23) from _Alois P. Heinz_, Apr 28 2024