A005495 Number of triangulations of the disk G_{n,3}.

4, 16, 88, 538, 3568, 24596, 176354, 1298732, 9788838, 75190990, 586994548, 4646450800, 37225608048, 301400446752, 2463161448024, 20297411421166, 168503717726980, 1408243135178256, 11840473621942108, 100102553809842544

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

References

• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• William G. Brown, Enumeration of Triangulations of the Disk, Proc. Lond. Math. Soc. s3-14 (1964) 746-768.

Programs

Maple

A005495 := proc(n) # see A210696
        BrownG(n,3) ;
end proc:
seq(A005495(n),n=0..25) ; # R. J. Mathar, Mar 30 2012

Mathematica

(* See A210696 for BrownG[n,m]  *)
a[n_] := BrownG[n, 3];
Table[a[n], {n, 0, 25}] (* Jean-François Alcover, Apr 25 2023 *)