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 A239082 #8 Nov 01 2014 20:20:06 %S A239082 1,1,2,4,10,26,76,232,764,2620,9496,35696,130656,464036,1615276, %T A239082 5517828,18628384,62330046,207657610,690610926,2299356168,7678084407, %U A239082 25759043565,86697055428,292427968880,987581324508,3337168641756,11277361448224,38099089805120 %N A239082 Number of self-inverse permutations p on [n] with displacement of elements restricted by 10: |p(i)-i| <= 10. %H A239082 Joerg Arndt and Alois P. Heinz, <a href="/A239082/b239082.txt">Table of n, a(n) for n = 0..1000</a> %Y A239082 Column k=10 of A238888. %Y A239082 Cf. A000085. %K A239082 nonn %O A239082 0,3 %A A239082 _Joerg Arndt_ and _Alois P. Heinz_, Mar 10 2014