%I #11 Feb 09 2019 08:41:31
%S 1,3,12,58,256,1160,5120,22560,98304
%N Number of unbranched mono-5-catapolyheptagons.
%D 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 Tables 4 and 5.
%H 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 Cf. A038175.
%K nonn,more
%O 2,2
%A _N. J. A. Sloane_.