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A122689
Irregular triangle read by rows giving numbers of azulenoid isomers (see Brunvoll et al. for precise definition).
0
1, 1, 3, 1, 14, 6, 2, 79, 43, 14, 3, 459, 326, 131, 37, 8, 1, 2800, 2442, 1172, 418, 108, 20, 1
OFFSET
1,3
REFERENCES
J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Azulenoids, MATCH, No. 34, 1996, 91-108.
EXAMPLE
Triangle begins:
1
1
3 1
14 6 2
79 43 14 3
459 326 131 37 8 1
2800 2442 1172 418 108 20 1
CROSSREFS
Sequence in context: A283285 A283374 A202039 * A283402 A283349 A204121
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Sep 23 2006
STATUS
approved