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 A289445 #9 Jul 08 2017 00:35:27 %S A289445 1,0,0,0,1,3,0,4,0,8,3,4 %N A289445 a(n) = number of similarity classes of groups G with exactly n subgroups and such that G = G-tilde, where G-tilde is the unique subgroup of G left after factoring out the cyclic, central Sylow subgroups. %H A289445 M. C. Slattery, <a href="http://www.jstor.org/stable/10.4169/amer.math.monthly.123.1.78">On a property motivated by groups with a specified number of subgroups</a>, Amer. Math. Monthly, 123 (2016), 78-81. %H A289445 M. C. Slattery, <a href="http://arxiv.org/abs/1607.01834">Groups with at most twelve subgroups</a>, arXiv:1607.01834 [math.GR], (2016). %Y A289445 Cf. A274847. %K A289445 nonn,more %O A289445 1,6 %A A289445 _N. J. A. Sloane_, Jul 08 2017