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 A259778 #11 Jul 19 2015 19:27:54 %S A259778 1,0,1,2,9,44,265,1280,5289,20366,78092,307978,1268773,5312280, %T A259778 22254973,92569648,381758301,1565720382,6420604761,26380036552, %U A259778 108607137785,447677119208,1845681472072,7605764624216,31326172589888,128986886647264,531083492316608 %N A259778 Number of permutations p of [n] with no fixed points and displacement of elements restricted by five: 1 <= |p(i)-i| <= 5. %H A259778 Alois P. Heinz, <a href="/A259778/b259778.txt">Table of n, a(n) for n = 0..1000</a> %H A259778 Vaclav Kotesovec, <a href="/A259778/a259778.txt">Recurrence (of order 142) and g.f.</a> %Y A259778 Column k=5 of A259776. %Y A259778 Cf. A260094. %K A259778 nonn %O A259778 0,4 %A A259778 _Alois P. Heinz_, Jul 05 2015