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A122676 Number of unbranched catacondensed azulenoids with n carbon atoms and C_s symmetry. 0
0, 0, 2, 12, 54, 256, 1141 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

REFERENCES

J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Azulenoids, MATCH, No. 34, 1996, 91-108.

CROSSREFS

Sequence in context: A145766 A181765 A198150 * A038175 A181541 A197230

Adjacent sequences:  A122673 A122674 A122675 * A122677 A122678 A122679

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Sep 23 2006

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.