A002710 Triangulations of the disk G_{n,1}. (Formerly M1680 N0662)

1, 2, 6, 26, 147, 892, 5876, 40490, 290020, 2136488, 16113254, 123878966, 968017330, 7670113856, 61510346760, 498496979754, 4077605379276, 33629943832280, 279413323740280, 2336935584712872, 19663001667901339

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]

Crossrefs

A row or column of the array in A262586.

Sequence in context: A120574 A333044 A178324 * A132609 A168450 A125224

Adjacent sequences: A002707 A002708 A002709 * A002711 A002712 A002713

Keyword

nonn

Author

N. J. A. Sloane

Extensions

Extended by Max Alekseyev, Mar 30 2009

Status

approved