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Search: id:A125672
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| A125672 |
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Classification of bicyclics with the parameter 'alpha' having the value of 3. See the paper by Hendrickson and Parks for details. |
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1
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| 1, 3, 11, 35, 113, 351, 1093, 3348, 10218, 30906, 93005
(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 5 on page 104.
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EXAMPLE
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If n=5 then the number of bicyclics when 'alpha' = three is 1.
If n=6 then the number of bicyclics when 'alpha' = three is 3.
If n=7 then the number of bicyclics when 'alpha' = three is 11.
If n=8 then the number of bicyclics when 'alpha' = three is 35.
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CROSSREFS
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Cf. A121330, A121331, A121332, A121333, A125064.
Sequence in context: A109196 A032637 A034576 this_sequence A107683 A014335 A147474
Adjacent sequences: A125669 A125670 A125671 this_sequence A125673 A125674 A125675
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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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