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 A179570 #5 Jul 22 2025 08:18:35 %S A179570 0,0,0,0,0,1,8,276,2774,59939,693696,13728106,180768774,3638322281, %T A179570 54074432712,1147607880440,19083350797374,432538009487375 %N A179570 Number of permutations of 1..n with the number moved left exceeding the number moved right by 4 or more. %Y A179570 Equal number moved left and right, see A062868 %K A179570 nonn %O A179570 1,7 %A A179570 _R. H. Hardin_ Jul 19 2010