OFFSET
0,4
LINKS
L. W. Beineke and R. E. Pippert, Enumerating dissectable polyhedra by their automorphism groups, Canad. J. Math., 26 (1974), 50-67.
S. J. Cyvin, Jianji Wang, J. Brunvoll, Shiming Cao, Ying Li, B. N. Cyvin, and Yugang Wang, Staggered conformers of alkanes: complete solution of the enumeration problem, J. Molec. Struct. 413-414 (1997), 227-239.
FORMULA
a(2n-1) = binomial(3n, n)/(2n+1) = A001764(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved