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 A308000 #13 May 10 2019 05:09:54 %S A308000 1,2,-1,3,4,-5,9,-3,-4,12,-7,5,-9,18,-8,-2,13,-16,7,8,-19,6,10,11,14, %T A308000 -29,17,15,-31,23,-11,-10,24,-6,-12,25,16,-48,20,19,-25,42,-47,22,21, %U A308000 -44,27,26,-57,30,28,-52,32,-13,-17,37,29,-62,43,-21,-20 %N A308000 The b sequence used in the definition of A280875. %H A308000 N. J. A. Sloane, <a href="/A308000/b308000.txt">Table of n, a(n) for n = 1..998</a> %H A308000 Rémy Sigrist, <a href="/A308000/a308000.png">Scatterplot of (a(n), A308001(n)) for n = 1..10000</a> %Y A308000 Cf. A280875, A308001. %K A308000 sign %O A308000 1,2 %A A308000 _N. J. A. Sloane_, May 09 2019