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A121188 Alkane systems (see Cyvin reference for precise definition). 0
1, 1, 1, 3, 6, 18, 44, 129, 354, 1040, 2961, 8662, 25022, 73005, 211723, 616522, 1789320, 5203258, 15097067 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..19.

S. J. Cyvin, B. N. Cyvin, J. Brunvoll, J. Wang, Enumeration of staggered conformers of alkanes and monocyclic cycloalkanes, J. Molec. Struct., 445 (1998), 127-137.

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.

CROSSREFS

Sequence in context: A222856 A007990 A197050 * A120718 A032120 A115344

Adjacent sequences:  A121185 A121186 A121187 * A121189 A121190 A121191

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 17 2006

STATUS

approved

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Last modified December 8 09:32 EST 2019. Contains 329862 sequences. (Running on oeis4.)