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 A030534 #13 Apr 06 2020 12:33:07 %S A030534 1,2,10,40,185,828,3805,17411,80177,369675,1710173,7931011,36884730, %T A030534 171987194,804027444,3767994408,17699839325,83328339997,393123808821, %U A030534 1858351499207,8801160980038,41756069328689,198437460900302,944521149228740,4502419787519360 %N A030534 Number of polyhexes of class PF2. %C A030534 See reference for precise definition. %C A030534 Cyvin has incorrect a(13)=369639 and a(14)=1710137 in Table III due to using incorrect values for A026298(13) and A026298(14) in Table II. - _Sean A. Irvine_, Apr 02 2020 %H A030534 S. J. Cyvin, Zhang Fuji, B. N. Cyvin, Guo Xiaofeng, and J. Brunvoll, <a href="https://doi.org/10.1021/ci00009a021">Enumeration and classification of benzenoid systems. 32. Normal perifusenes with two internal vertices</a>, J. Chem. Inform. Comput. Sci., 32 (1992), 532-540. %F A030534 a(4)=1, a(n) = A026106(n) + A026118(n) + A026298(n) + A030519(n) for n > 4. - _Sean A. Irvine_, Apr 02 2020 %Y A030534 Cf. A026106, A026118, A026298, A030519, A030520, A030525, A030529, A030532, A030534. %K A030534 nonn %O A030534 4,2 %A A030534 _N. J. A. Sloane_ %E A030534 a(13) and a(14) corrected and more terms from _Sean A. Irvine_, Apr 02 2020