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 A119528 #10 May 18 2013 15:42:45 %S A119528 1,0,7,-7288,210319661226,-28724163065553504725184, %T A119528 -17273218743083166095017987886925095168489136, %U A119528 -3262865955763797132157936566332771517266609360571691111615623236765760 %N A119528 Determinant of n X n matrix of first n^2 number of trees with n unlabeled nodes (A000055). %H A119528 Alois P. Heinz, <a href="/A119528/b119528.txt">Table of n, a(n) for n = 1..17</a> %e A119528 a(3) = 7 = %e A119528 |.1..1..1| %e A119528 |.1..2..3| %e A119528 |.6.11.23|. %Y A119528 Cf. A000055, A119493. %K A119528 easy,sign %O A119528 1,3 %A A119528 _Jonathan Vos Post_, May 27 2006 %E A119528 More terms from _Alois P. Heinz_, Sep 26 2011