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 A361564 #7 Mar 17 2023 06:51:19
%S A361564 4,6,10,17,25,39,59,87,127,186
%N A361564 Number of (n-3)-connected unlabeled n-node graphs.
%D A361564 M. Kirchweger, M. Scheucher, and S. Szeider, SAT-Based Generation of Planar Graphs, in preparation.
%F A361564 a(n) = Sum_{j=1..3} A259862(n, n-j). - _Andrew Howroyd_, Mar 16 2023
%Y A361564 Cf. A259862.
%K A361564 nonn,more
%O A361564 3,1
%A A361564 _Manfred Scheucher_, Mar 15 2023