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%I #3 Mar 30 2012 18:36:33
%S 1,1,2,4,9,20,45,101,228,515,1164,2631,5947,13443,30388,68694,155287,
%T 351036,793541,1793853,4055128,9166895,20722396,46844400,105894986,
%U 239382894,541141486,1223287525,2765325535,6251208451,14131286391
%N a(n+1) = floor( a(n)*sum(k=0..n, 1/a(k)^s) ), where s = sum(k>=0, 1/a(k)^s) and a(0)=1; s = 2.260568736857767...
%C a(n) ~ c*s^n, c=0.333925961123093...
%K nonn
%O 0,3
%A _Paul D. Hanna_, Jan 30 2003
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