A121187 Alkane systems (see Cyvin reference for precise definition).

1, 4, 22, 126, 686, 3640, 19470, 103889, 558389, 3019000, 16443467

Offset

4,2

Links

Table of n, a(n) for n=4..14.

S. J. Cyvin, B. N. Cyvin, J. Brunvoll, and J. Wang, Enumeration of staggered conformers of alkanes and monocyclic cycloalkanes, J. Molec. Struct., 445 (1998), 127-137. See Table 3, branched, column "Stereo-isomers".

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. See Table 6, branched, column "Stereo-isomers".

Crossrefs

Sequence in context: A136777 A056625 A116428 * A011789 A047039 A100525

Adjacent sequences: A121184 A121185 A121186 * A121188 A121189 A121190

Keyword

nonn,more

Author

N. J. A. Sloane, Aug 17 2006

Status

approved