A005499 Triangulations of the disk G_{3,n}. (Formerly M3942)

5, 26, 119, 538, 2310, 9882, 41715, 175088, 730626, 3037510, 12584726, 52003792, 214401024, 882233898, 3624161175, 14865947668, 60898934250, 249184153548, 1018532686314, 4159265561360, 16970015555220, 69183689403686

Offset

0,1

References

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..21.

Jean-François Alcover, Mathematica program

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

A005499 := proc(n)
        BrownG(3, n) ;
end proc:  # take BrownG from A210696
seq(A005499(n), n=0..25) ; # R. J. Mathar, Mar 30 2012

Mathematica

(* See links *)

Crossrefs

A row or column of the array in A262586.

Sequence in context: A002316 A293799 A211606 * A185552 A171702 A254825

Adjacent sequences: A005496 A005497 A005498 * A005500 A005501 A005502

Keyword

nonn

Author

N. J. A. Sloane

Status

approved