A002711 - OEIS

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A002711

Triangulations of the disk G_{n,2}
(Formerly M3916 N1609)

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)

OFFSET

0,2

REFERENCES

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).

LINKS

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.

W. G. Brown, Enumeration of Triangulations of the Disk, Proc. Lond. Math. Soc. s3-14 (1964) 746-768. [Annotated scanned copy]

MAPLE

# see A210696

CROSSREFS

A row or column of the array in A262586.

Cf. A210696.

Sequence in context: A082428 A015558 A168598 * A218962 A124311 A353736

Adjacent sequences: A002708 A002709 A002710 * A002712 A002713 A002714

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

Extended by Max Alekseyev, Mar 30 2009

STATUS

approved