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Search: id:A000624
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| A000624 |
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Number of monosubstituted alkanes C(n)H(2n+1)-X of the form shown in the Comments lines that are not stereoisomers.
(Formerly M2355 N0932)
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+0
6
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| 0, 0, 0, 1, 1, 3, 4, 9, 13, 26, 40, 74, 118, 210, 342, 595, 981, 1684, 2798, 4763, 7951, 13469, 22548, 38082, 63862, 107666, 180740, 304382, 511292, 860504, 1445998, 2432665, 4088805, 6877172, 11560684, 19441791, 32684789, 54961955, 92404472, 155377371, 261235027
(list; graph; listen)
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OFFSET
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1,6
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COMMENT
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....X
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R-C-R' (tertiary)
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....R"
Then Ps (and As) = A000620, Pn (and An, Sn) = A000621, Ss = A000622, Ts = A000623, Tn = this sequence, T = A000625. Recurrences generating these sequences are given in the Maple program in A000620.
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
C. M. Blair and H. R. Henze, The number of stereoisomeric and non-stereoisomeric mono-substitution products of the paraffins, J. Amer. Chem. Soc., 54 (1932), 1098-1105.
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CROSSREFS
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Cf. A000620-A000625.
Sequence in context: A131326 A089300 A079284 this_sequence A056514 A151517 A050163
Adjacent sequences: A000621 A000622 A000623 this_sequence A000625 A000626 A000627
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Additional comments from Bruce Corrigan, Nov 04, 2002
False g.f. deleted by N. J. A. Sloane (njas(AT)research.att.com), May 13 2008
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