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A038176 A038175/2. 0
0, 1, 6, 27, 128, 572, 2560, 11248, 49152 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

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

Table of n, a(n) for n=2..10.

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.

Sequence in context: A030297 A045500 A109115 * A104745 A184279 A299598

Adjacent sequences:  A038173 A038174 A038175 * A038177 A038178 A038179

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 25 07:37 EDT 2022. Contains 354835 sequences. (Running on oeis4.)