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%I #5 Mar 12 2015 00:30:32
%S 1,1,1,2,3,5,9,17,32,60,114,218,418,803,1549,2995,5802,11263,21900,
%T 42648,83163,162366,317352,620906,1215941,2383244,4674825,9176508,
%U 18025284,35429006,69677045,137106444,269928311,531676976,1047716394
%N a(n) is the floor of the average of the 1st moment of all previous entries.
%F a(n)=floor(sum(j=1, n-1, j*a(j))/(n-1))
%e The sequence opens 1,1,1,2,3,5. a(7) = floor((1*1 + 2*1 + 3*1 + 4*2 + 5*3 + 6*5)/6) = floor((1 + 2 + 3 + 8 + 15 + 30)/6) = floor(59/6) = 9.
%o (PARI) for(i=2,50,v[i]=floor(sum(j=1,i-1,j*v[j])/(i-1)))
%K nonn
%O 1,4
%A _Jon Perry_, Apr 04 2004
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