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
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Sep 23 2006
STATUS
approved