A038176 A038175/2.

0, 1, 6, 27, 128, 572, 2560, 11248, 49152

Offset: 2

Author

N. J. A. Sloane

Keywords

• nonn
• more

References

• 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.

Links

• B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, 1996 [Annotated scanned copy of pages 118, 119 only].

Crossrefs

Cf. A038175.