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A002711
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Triangulations of the disk G_{n,2}
(Formerly M3916 N1609)
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1
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1, 5, 21, 119, 735, 4830, 33253, 237336, 1743588, 13114465, 100591491, 784428522, 6204258970, 49675571820, 402013608525, 3284214703056, 27055525967324, 224557688302164, 1876374953765620, 15774315150669075, 133345566025874055
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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REFERENCES
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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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LINKS
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Table of n, a(n) for n=0..20.
William G. Brown, Enumeration of Triangulations of the Disk, Proc. Lond. Math. Soc. s3-14 (1964) 746-768.
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MAPLE
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# see A210696
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CROSSREFS
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Sequence in context: A082428 A015558 A168598 * A124311 A208593 A213009
Adjacent sequences: A002708 A002709 A002710 * A002712 A002713 A002714
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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Extended by Max Alekseyev, Mar 30 2009
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STATUS
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approved
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