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 A274330 #17 Jun 22 2016 09:23:49 %S A274330 1,0,-1,0,1,-8,-9,8,-7,-30,-57,-56,-55,234,-233,8,-7,-190,-597,-1458, %T A274330 -1215,6132,-3169,640,641,1424,-3489,-13034,13033,20730,-24105,-1592, %U A274330 1593,-20878,-60437,-9042,-26883,1915002,-6300585,-1616922,-1597239,8578710,-15665481,9889740,-3043455,-4219198,-377473 %N A274330 Determinant of n X n Hankel matrix whose entries are 1-A010060(i+j), where A010060 is the Thue-Morse sequence. %Y A274330 Cf. A010060, A056887. %K A274330 sign %O A274330 1,6 %A A274330 _Jeffrey Shallit_, Jun 21 2016