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 A125672 Classification of bicyclics with the parameter 'alpha' having the value of 3. See the paper by Hendrickson and Parks for details. 1
 1, 3, 11, 35, 113, 351, 1093, 3348, 10218, 30906, 93005 (list; graph; refs; listen; history; text; internal format)
 OFFSET 5,2 COMMENTS Here 'alpha' is the number of atoms the two rings have in common. REFERENCES 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. LINKS EXAMPLE 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. CROSSREFS Cf. A121330, A121331, A121332, A121333, A125064. Sequence in context: A109196 A032637 A034576 * A107683 A259400 A320087 Adjacent sequences: A125669 A125670 A125671 * A125673 A125674 A125675 KEYWORD nonn AUTHOR Parthasarathy Nambi, Jan 29 2007 STATUS approved

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Last modified February 8 08:32 EST 2023. Contains 360136 sequences. (Running on oeis4.)