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A005505 Triangulations of the disk K_{n,1}.
(Formerly M1227)
2

%I M1227

%S 1,2,4,10,29,86,266,844,2742,9032,30202,101988,347914

%N Triangulations of the disk K_{n,1}.

%D C. F. Earl and L. J. March, Architectural applications of graph theory, pp. 327-355 of R. J. Wilson and L. W. Beineke, editors, Applications of Graph Theory. Academic Press, NY, 1979.

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

%H C. F. Earl and L. J. March, <a href="/A005500/a005500_1.pdf">Architectural applications of graph theory</a>, pp. 327-355 of R. J. Wilson and L. W. Beineke, editors, Applications of Graph Theory. Academic Press, NY, 1979. (Annotated scanned copy)

%H C. F. Earl & N. J. A. Sloane, <a href="/A005500/a005500.pdf">Correspondence, 1980-1981</a>

%F a(n) = 2 * A005500(n) - A002710(n) (based on _Max Alekseyev_'s formula, cf. A005500).

%Y A row or column of the array in A169809.

%K nonn,more

%O 0,2

%A _N. J. A. Sloane_

%E a(7)-a(12) from _Altug Alkan_ and _Manfred Scheucher_, Mar 08 2018

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Last modified August 7 17:44 EDT 2020. Contains 336278 sequences. (Running on oeis4.)