Search: id:A101125
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%I A101125
%S A101125 1,1,1,4,13,49,233,1240,7201,45521,311225,2285116,17909309,149080865,
%T A101125 1312597361,12180044528,118740086369,1212695223137,12942512039697,
%U A101125 144018843991220,1667526171728525,20053044685823697,250043383489271193
%N A101125 Row sums of a Chebyshev number triangle.
%C A101125 Row sums of A101124.
%H A101125 <a href="Sindx_Ch.html#Cheby">Index entries for sequences related to 
               Chebyshev polynomials.</a>
%F A101125 a(n)=sum{k=0..n, if(k<n, T(n-k, k), if(k=n, 1, 0))} where T(n, k)=(n/
               2)sum{j=0..floor(n/2), C(n-j, j)(-1)^j*(2k)^(n-2j)}.
%Y A101125 Sequence in context: A140660 A149453 A149454 this_sequence A056275 A149455 
               A105968
%Y A101125 Adjacent sequences: A101122 A101123 A101124 this_sequence A101126 A101127 
               A101128
%K A101125 easy,nonn
%O A101125 0,4
%A A101125 Paul Barry (pbarry(AT)wit.ie), Dec 02 2004

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