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A036673
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Number of stereoisomers of all n-node acyclic hydrocarbons with no triple bonds.
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2
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1, 2, 3, 9, 20, 64, 205, 747, 2767, 10850, 43254, 176990, 735007, 3099272, 13220407, 57001841, 248009246, 1087947441, 4807232915, 21381055533, 95660032110, 430298114499, 1945096434552, 8832200860663, 40271358004756, 184325394540531, 846667179332120
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OFFSET
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1,2
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COMMENTS
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Alternatively, unrooted steric quartic trees allowing single and double edges with n nodes. - Natan Arie Consigli, Jun 30 2017
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LINKS
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CROSSREFS
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Cf. A000628 (steric quartic trees with no double edges).
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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