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 A111237 #10 Sep 19 2024 02:16:59 %S A111237 1,12,2880,226800,101606400,6985440000,35961045120000, %T A111237 1431699108840000,692306057963520000,181128033944995737600, %U A111237 344143264495491901440000,6651046563131624734080000,22028266217091941119272960000 %N A111237 LCM of the absolute values of the inverse Hilbert matrix. %o A111237 (J) NB. http://www.jsoftware.com %o A111237 H=: % @: >: @: (+/~) @: i. @: x: %o A111237 *./ @: | @:, @: %. @: H n %Y A111237 Cf. A005249 (determinant), A111194 (permanent), A092326 (permanent/determinant). %K A111237 nonn %O A111237 1,2 %A A111237 _Roger Hui_, Oct 28 2005