OFFSET
0,7
REFERENCES
J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.
EXAMPLE
Triangle begins
1
1 1
1 1 1
4 5 5 1
16 29 25 5 1
100 213 183 54 9 1
625 1545 1395 502 99 9 1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Aug 18 2006
STATUS
approved