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Search: id:A066373
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| 2, 7, 20, 52, 128, 304, 704, 1600, 3584, 7936, 17408, 37888, 81920, 176128, 376832, 802816, 1703936, 3604480, 7602176, 15990784, 33554432, 70254592, 146800640, 306184192, 637534208, 1325400064, 2751463424, 5704253440
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OFFSET
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2,1
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LINKS
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M. Azaola and F. Santos, The number of triangulations of the cyclic polytope C(n,n-4), Discrete Comput. Geom., 27 (2002), 29-48.
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FORMULA
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G.f.= x^2*(2-x)/(1-2x)^2. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 23 2006
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MAPLE
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seq((3*n-2)*2^(n-3), n=2..30); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 23 2006
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CROSSREFS
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Sequence in context: A090145 A123203 A134311 this_sequence A096005 A050532 A050513
Adjacent sequences: A066370 A066371 A066372 this_sequence A066374 A066375 A066376
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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), Jan 04 2002
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