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 A189185 #7 Jul 22 2025 11:36:11 %S A189185 1,127385,142150545,1162453545201,4646631858824169, %T A189185 24772194881412281568,118756821701162151227761, %U A189185 594579828469677562655346609,2929346624538378869533780899145,14529411775016363663957822341921161 %N A189185 Number of nX8 array permutations with each element making a single king move. %C A189185 Column 8 of A189186 %H A189185 R. H. Hardin, <a href="/A189185/b189185.txt">Table of n, a(n) for n = 1..15</a> %e A189185 Some solutions for 3X8 %e A189185 ..1..0..3..2..5..4..7..6....1..0..3..2..5..4..7..6....1..0..3..2..5..4..7..6 %e A189185 .17.16..9.20.11.21.13.14...17.16..9.19.20.14.21.22...17.16.18.19.11.21.23.22 %e A189185 ..8.10.19.18.12.22.23.15....8.18.10.12.11.13.23.15....8..9.10.20.12.13.14.15 %K A189185 nonn %O A189185 1,2 %A A189185 _R. H. Hardin_ Apr 18 2011