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 A038175 #8 Jul 08 2025 22:09:05 %S A038175 0,2,12,54,256,1144,5120,22496,98304 %N A038175 Unbranched mono-5-catapolyheptagons. %D A038175 B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121. See Table 5. %H A038175 B. N. Cyvin et al., <a href="/A323850/a323850.png">Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons</a>, 1996 [Annotated scanned copy of pages 118, 119 only]. %Y A038175 Cf. A038177. %K A038175 nonn,more %O A038175 2,2 %A A038175 _N. J. A. Sloane_