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 A046697 #17 Apr 17 2021 01:43:49 %S A046697 1,1,3,9,35,137,574,2431,10534,46123,204343,912967,4111375,18637303, %T A046697 84988775,389589095,1794280695,8298536715,38527147681,179487103411, %U A046697 838820394913,3931498654243,18475619837816,87036536948489,410947150379120,1944378509186237 %N A046697 Number of catacondensed simply-connected monopentapolyhexes (catafusenes). %H A046697 S. J. Cyvin et al., <a href="http://dx.doi.org/10.1016/0166-1280(93)87033-A">Graph-theoretical studies on fluoranthenoids and fluorenoids:enumeration of some catacondensed systems</a>, J. Molec. Struct. (Theochem), 285 (1993), 179-185. %F A046697 a(n) = A038392(n) + A044046(n). %Y A046697 Cf. A024311, A038392, A044046. %K A046697 nonn %O A046697 1,3 %A A046697 _N. J. A. Sloane_ %E A046697 More terms from _Sean A. Irvine_, Apr 16 2021