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A134824 Generated by reverse of Schroeder II o.g.f. 2

%I #10 Mar 26 2017 13:04:08

%S 0,1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,

%T -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,

%U -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1

%N Generated by reverse of Schroeder II o.g.f.

%C The o.g.f. S(x) for A001003 (Schroeder II) satisfies 2*S^2(x) + (1+x)*S(x) + x = 0.

%C Using the Lagrange series for y=S(x) with y=0+x*(y/A(y)) leads to the formula for Schroeder II numbers involving the Narayana triangle A001263. See the Narayana comment by B. Cloitre under A001003 and a multiple differentiation formula given there.

%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1).

%F G.f.: x*(1-2*x)/(1-x).

%F a(0)=0,a(1)=1, a(n)=-1, n>=2.

%Y If the initial 0 is omitted, we get A153881.

%K sign,easy

%O 0,1

%A _Wolfdieter Lang_ Nov 13 2007

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Last modified April 18 08:27 EDT 2024. Contains 371769 sequences. (Running on oeis4.)