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A002709
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Triangulations of the disk.
(Formerly M3933 N1618)
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1
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1, 1, 1, 5, 24, 133, 846, 5661, 39556, 286000, 2123329, 16112057, 124512556, 977227830, 7772368380, 62535450861, 508271324688, 4168218286276, 34455941596060, 286864341314320, 2403705165816240, 20258850167232165
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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REFERENCES
| W. G. Brown, Enumeration of triangulations of the disk, Proc. London Math. Soc., 14 (1964), 746-768.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A036919 A020067 A066118 * A193668 A009411 A080996
Adjacent sequences: A002706 A002707 A002708 * A002710 A002711 A002712
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| Extended by Max Alekseyev (maxale(AT)gmail.com), Mar 30 2009
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