login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A047761 a(n) = A047760(2n+1). 3
0, 1, 1, 3, 5, 12, 23, 55, 114, 273, 588, 1428, 3156, 7752, 17427, 43263, 98516, 246675, 567281, 1430715, 3316521, 8414640, 19633796, 50067108, 117464424, 300830572, 709098696, 1822766520, 4313876888, 11124755664, 26421284043 (list; graph; refs; listen; history; text; internal format)
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
Sequence in context: A131322 A224747 A036657 * A349055 A026786 A027246
KEYWORD
nonn
AUTHOR
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)