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 A007084 M3255 #22 Oct 09 2017 02:31:07 %S A007084 0,0,0,0,1,1,1,4,5,14,28,86,211,648,1878,5931,18326,58746,187620, %T A007084 608065,1975191,6461809,21212414 %N A007084 Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R2 and R4. %C A007084 The graphs R2 and R4 are given on p. 281 of Holton. - _Sean A. Irvine_, Oct 09 2017 %D A007084 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A007084 D. A. Holton et al., <a href="http://dx.doi.org/10.1016/0095-8956(85)90072-3">Hamiltonian cycles in cubic 3-connected bipartite planar graphs</a>, J. Combin. Theory, B 38 (1985), 279-297. %Y A007084 Cf. A007083. %K A007084 nonn,more %O A007084 2,8 %A A007084 _N. J. A. Sloane_, _Mira Bernstein_ %E A007084 Title improved, a(17) corrected and a(20)-a(24) from _Sean A. Irvine_, Oct 09 2017