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A144847 Denominators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^(2k+1) in polynomial u_n(x), used to approximate x->sin(Pi*x)/Pi.

%I A144847 #8 Dec 20 2014 17:08:09
%S A144847 1,2,2,8,4,8,88,22,88,44,2048,64,1024,256,2048,78656,4916,19664,39328,
%T A144847 78656,39328,4439936,34687,277496,1109984,4439936,1109984,2219968,
%U A144847 344674688,2692771,21542168,43084336,344674688,86168672,172337344
%N A144847 Denominators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^(2k+1) in polynomial u_n(x), used to approximate x->sin(Pi*x)/Pi.
%H A144847 Alois P. Heinz, <a href="/A144847/b144847.txt">Rows n = 0..99, flattened</a>
%p A144847 seq(seq(denom(T(n,k)), k=0..n), n=0..9);
%Y A144847 See A144846 for more information on T(n,k).
%K A144847 frac,nonn,tabl
%O A144847 0,2
%A A144847 _Alois P. Heinz_, Sep 22 2008