OFFSET
0,2
COMMENTS
See Eq. 6 in the paper by Pevac and Crundwell for details.
LINKS
S. Pevac and G. Crundwell, Polya's Isomer Enumeration Method: A Unique Exercise in Group Theory and Combinatorial Analysis for Undergraduates, J. Chem. Educ., Vol. 77 (2000), pp. 1358-1360.
EXAMPLE
There are 2 isomers with one deuterium in the chair form of cyclohexane.
There are 96 isomers with six deuteriums in the chair form of cyclohexane.
There are 10 isomers with ten deuteriums in the chair form of cyclohexane.
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
Parthasarathy Nambi, Jul 31 2007, Aug 03 2007
EXTENSIONS
Presumably A130015 and this sequence are simply rows in two (possibly identical) triangles. It would be nice to have the sequences corresponding to these triangles. - N. J. A. Sloane, Aug 03 2007
STATUS
approved