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 A300755 #7 Apr 10 2022 15:41:40 %S A300755 1,2,2,4,4,5,3,7,5,7,4,11,5,8,8,12,6,13,6,15,10,11,7,21,10,13,12,18,9, %T A300755 22 %N A300755 Erroneous version of A145393. %C A300755 Included in accordance of OEIS policy of including published but incorrect sequences to serve as pointers to the correct versions. - _N. J. A. Sloane_, Apr 10 2022 %H A300755 John S. Rutherford, <a href="http://dx.doi.org/10.1107/S010876730804333X">Sublattice enumeration. IV. Equivalence classes of plane sublattices by parent Patterson symmetry and colour lattice group type</a>, Acta Cryst. (2009). A65, 156-163. See Table 2, row p4mm. Has a typo in a(5). %K A300755 dead %O A300755 1,2 %A A300755 _Andrey Zabolotskiy_, Mar 12 2018