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 A004030 M3847 #48 Jul 09 2017 04:08:22 %S A004030 1,1,5,14,64,189,826 %N A004030 Erroneous version of A256413. %C A004030 Opgenorth, Plesken & Schulz (1998) state that 826 is wrong and 841 is correct, i.e., this sequence is presently wrong and A256413 is correct. - _Andrey Zabolotskiy_, Jul 08 2017 %D A004030 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A004030 Opgenorth, J; Plesken, W; Schulz, T, <a href="https://doi.org/10.1107/S010876739701547X">Crystallographic Algorithms and Tables</a>, Acta Crystallogr. A, 54 (1998), 517-531. %H A004030 W. Plesken and W. Hanrath, <a href="http://dx.doi.org/10.1090/S0025-5718-1984-0758205-5">The lattices of six-dimensional Euclidean space</a>, Math. Comp., 43 (1984), 573-587. %Y A004030 Cf. A256413. %K A004030 dead %O A004030 0,3