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Search: id:A130016
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| A130016 |
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Number of isomers for different number of substitutions of hydrogen atoms by deuterium in the chair form of cyclohexane. |
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+0
1
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| 1, 2, 10, 24, 54, 76, 96, 76, 54, 24, 10, 2, 1
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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See Eq. 6 in the paper by Pevac and Crundwell for details.
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REFERENCES
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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
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EXAMPLE
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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.
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CROSSREFS
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Cf. A130015.
Sequence in context: A120845 A049450 A092906 this_sequence A120550 A119062 A058373
Adjacent sequences: A130013 A130014 A130015 this_sequence A130017 A130018 A130019
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KEYWORD
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fini,full,nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jul 31 2007, Aug 03 2007
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EXTENSIONS
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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 (njas(AT)research.att.com), Aug 03 2007
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