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Search: id:A125669
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| A125669 |
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Classification of bicyclics with the parameter 'alpha' having the value of 0. See the paper by Hendrickson and Parks for details. |
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+0
1
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OFFSET
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6,2
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COMMENT
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Here 'alpha' is the number of atoms the two rings have in common.
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REFERENCES
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James B. Hendrickson and Camden A. Parks, "Generation and Enumeration of Carbon Skeletons", J. Chem. Inf. Comput. Sci., vol. 31 (1991), pp. 101-107. See Table VII column 2 on page 104.
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EXAMPLE
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If n=6 then the number of bicyclics when 'alpha' = zero is 1.
If n=7 then the number of bicyclics when 'alpha' = zero is 4.
If n=8 then the number of bicyclics when 'alpha' = zero is 20.
If n=9 then the number of bicyclics when 'alpha' = zero is 76.
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CROSSREFS
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Cf. A121330, A121331, A121332, A121333, A125064.
Sequence in context: A054611 A121257 A145563 this_sequence A082138 A074358 A055296
Adjacent sequences: A125666 A125667 A125668 this_sequence A125670 A125671 A125672
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 29 2007
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