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 A321051 #6 Oct 26 2018 19:57:30 %S A321051 0,97,744,3628,15038,59963,245386,1054116,4585666,19816317,84377528, %T A321051 354143757,1472404694,6105113905,25314316974,105009933736, %U A321051 435538239600,1804712603943,7467462109856,30859243303779,127410491972804,525761755401512,2168906840165128 %N A321051 Number of permutations of [n] with no fixed points where the maximal displacement of an element equals five. %H A321051 Alois P. Heinz, <a href="/A321051/b321051.txt">Table of n, a(n) for n = 5..1000</a> %F A321051 a(n) = A259778(n) - A259777(n). %Y A321051 Column k=5 of A259784. %Y A321051 Cf. A259777, A259778. %K A321051 nonn,easy %O A321051 5,2 %A A321051 _Alois P. Heinz_, Oct 26 2018