The On-Line Encyclopedia of Integer Sequences (OEIS)

A122676 revision #2

A122676

Number of unbranched catacondensed azulenoids with n carbon atoms and C_s symmetry.

0, 0, 2, 12, 54, 256, 1141

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OFFSET

1,3

REFERENCES

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

LINKS

CROSSREFS

KEYWORD

nonn

AUTHOR

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

STATUS

approved