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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
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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REFERENCES
| 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
| 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
| Cf. A000625, A063832.
Sequence in context: A107442 A127864 A077917 * A194589 A189918 A164560
Adjacent sequences: A055933 A055934 A055935 * A055937 A055938 A055939
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KEYWORD
| nonn
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AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 21 2001
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