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Search: id:A055936
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| A055936 |
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Stereoisomeric homologues with molecular formula C_{3+n} H_{6+2n}. |
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+0
1
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| 1, 1, 5, 11, 33, 87, 259, 730, 2150, 6278, 18622, 55340, 165857, 498907, 1509012, 4581570, 13967031, 42722777, 131110259, 403527667, 1245358416, 3852965298, 11948207174, 37131355170, 115623660978, 360712069084, 1127276560366
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OFFSET
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0,3
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REFERENCES
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G. Polya, Kombinatorische Anzahlbestimmungen fuer Gruppen, Graphen und chemische Verbindungen, Acta Math. 68 (1937), 145-254.
G. Polya and R. C. Read, Combinatorial Enumeration of Groups, Graphs and Chemical Compounds, Springer-Verlag, 1987, pp. 63-64.
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FORMULA
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G.f.: A(x) = (B(x)^6 + 3*B(x^2)^3 + 2*B(x^3)^2)/6, where B(x) is g.f. for A000625.
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CROSSREFS
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Cf. A000625, A063832.
Sequence in context: A107442 A127864 A077917 this_sequence A164560 A054854 A005178
Adjacent sequences: A055933 A055934 A055935 this_sequence A055937 A055938 A055939
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KEYWORD
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nonn
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AUTHOR
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Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 21 2001
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