A122677 Number of catacondensed azulenoids with n carbon atoms.

1, 1, 3, 12, 58, 256, 1156

Offset

1,3

Links

Table of n, a(n) for n=1..7.

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

Crossrefs

Sequence in context: A370528 A032268 A079245 * A038177 A163047 A369616

Adjacent sequences: A122674 A122675 A122676 * A122678 A122679 A122680

Keyword

nonn

Author

N. J. A. Sloane, Sep 23 2006

Status

approved