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 A308001 #14 May 10 2019 05:10:02 %S A308001 3,1,2,7,-1,4,6,-7,8,5,-2,-4,9,10,-10,11,-3,-9,15,-11,-13,16,21,25, %T A308001 -15,-12,32,-16,-8,12,-21,14,18,-18,13,41,-32,-28,39,-6,17,-5,-25,43, %U A308001 -23,-17,53,-31,-27,58,-24,-20,19,-30,20,66,-33,-19,22,-41 %N A308001 The c sequence used in the definition of A280875. %H A308001 N. J. A. Sloane, <a href="/A308001/b308001.txt">Table of n, a(n) for n = 1..997</a> %Y A308001 Cf. A280875, A308000. %K A308001 sign %O A308001 1,1 %A A308001 _N. J. A. Sloane_, May 09 2019