A121189 - OEIS

%I #11 Jul 29 2023 14:04:36

%S 0,0,0,1,1,4,4,12,12,37,36,108,105,315,310,911,884,2654,2581

%N Alkane systems (see Cyvin reference for precise definition).

%H S. J. Cyvin, Jianji Wang, J. Brunvoll, Shiming Cao, Ying Li, B. N. Cyvin, and Yugang Wang, <a href="https://doi.org/10.1016/S0022-2860(97)00025-2">Staggered conformers of alkanes: complete solution of the enumeration problem</a>, J. Molec. Struct. 413-414 (1997), 227-239. See Table 3, unbranched, column C_2.

%H S. J. Cyvin et al., <a href="http://dx.doi.org/10.1016/S0022-2860(97)00419-5">Enumeration of staggered conformers of alkanes and monocyclic cycloalkanes</a>, J. Molec. Struct., 445 (1998), 127-137. See Table 6, unbranched, column C_2.

%K nonn,more

%O 1,6

%A _N. J. A. Sloane_, Aug 17 2006