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 A033536 Cubes of Catalan numbers (A000108). 9

%I

%S 1,1,8,125,2744,74088,2299968,78953589,2924207000,114933031928,

%T 4738245926336,203152294091656,9000469593857728,410006814589000000,

%U 19129277941464384000,911218671317138401125,44202915427981062663000

%N Cubes of Catalan numbers (A000108).

%C Also the number of maximum independent vertex sets in the 3(n-1)-triangular honeycomb acute knight graph. - _Eric W. Weisstein_, Dec 31 2017

%H Vincenzo Librandi, <a href="/A033536/b033536.txt">Table of n, a(n) for n = 0..500</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CatalanNumber.html">Catalan Number</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MaximumIndependentVertexSet.html">Maximum Independent Vertex Set</a>

%F From _Ilya Gutkovskiy_, Jan 23 2017: (Start)

%F O.g.f.: (1 - 3F2(-1/2,-1/2,-1/2; 1,1; 64*x))/(8*x).

%F E.g.f.: 3F3(1/2,1/2,1/2; 2,2,2; 64*x).

%F a(n) ~ 64^n/(Pi^(3/2)*n^(9/2)). (End)

%t Table[CatalanNumber@n^3, {n, 0, 30}] (* _Vincenzo Librandi_, Nov 13 2012 *)

%t CatalanNumber[Range[0, 20]]^3 (* _Eric W. Weisstein_, Dec 31 2017 *)

%o (MuPAD) combinat::dyckWords::count(n)^3 \$ n = 0..16; // _Zerinvary Lajos_, Feb 15 2007

%o (Sage) [catalan_number(i)^3 for i in xrange(0,17)] # _Zerinvary Lajos_, May 17 2009

%o (MAGMA) [Catalan(n)^3: n in [0..20]]; // _Vincenzo Librandi_, Nov 13 2012

%o (PARI) a(n) = (binomial(2*n, n)/(n+1))^3; \\ _Altug Alkan_, Dec 31 2017

%Y Cf. A000108.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Dec 10 1999

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Last modified February 16 21:59 EST 2019. Contains 320200 sequences. (Running on oeis4.)