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Search: id:A125670
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| A125670 |
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Classification of bicyclics with the parameter 'alpha' having the value of 1. See tha paper by Hendrickson and Parks for details. |
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1
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| 1, 2, 9, 26, 87, 257, 787, 2322, 6891, 20160, 58939
(list; graph; listen)
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OFFSET
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5,2
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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 3 on page 104.
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EXAMPLE
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If n=5 then the number of bicyclics when 'alpha' = one is 1.
If n=6 then the number of bicyclics when 'alpha' = one is 2.
If n=7 then the number of bicyclics when 'alpha' = one is 9.
If n=8 then the number of bicyclics when 'alpha' = one is 26.
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CROSSREFS
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Cf. A121330, A121331, A121332, A121333, A125064.
Sequence in context: A014150 A136429 A091469 this_sequence A008910 A051746 A123904
Adjacent sequences: A125667 A125668 A125669 this_sequence A125671 A125672 A125673
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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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