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A038195 Triangle of crude totals J_{r,a} of unbranched a-5-catapolyheptagons. 0
1, 1, 1, 1, 2, 1, 4, 10, 8, 2, 16, 48, 52, 24, 4, 64, 224, 304, 200, 64, 8, 256, 1024, 1664, 1408, 656, 160, 16, 1024, 4608, 8704, 8960, 5440, 1952, 384, 32 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

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.

LINKS

Table of n, a(n) for n=0..35.

CROSSREFS

Sequence in context: A219002 A156919 A179077 * A212770 A205855 A038521

Adjacent sequences:  A038192 A038193 A038194 * A038196 A038197 A038198

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 22 18:55 EDT 2018. Contains 316500 sequences. (Running on oeis4.)