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 A022564 #15 Jul 08 2025 09:17:35 %S A022564 0,0,0,0,0,0,0,0,4,16,84,408 %N A022564 Number of 2-connected non-Hamiltonian claw-free graphs on n nodes. %H A022564 R. Faudree, E. Flandrin and Z. Ryjacek, <a href="https://doi.org/10.1016/S0012-365X(96)00045-3">Claw-free graphs - a survey</a>, Discr. Math., 164 (1997), 87-147. %Y A022564 Cf. A022562, A022564. %K A022564 nonn,more %O A022564 1,9 %A A022564 _N. J. A. Sloane_