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%I #8 Nov 24 2016 02:14:21
%S 3,3,3,6,6,6,6,6,6,12,12,12,12,12,12,12,12,12,12,12,12,24,24,24,24,24,
%T 24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,48,48,48,48,
%U 48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48
%N 3 appears three times, 2*3=6 appears six times, 2*6=12 appears twelve times etc.
%F Let b(1)=1 b(n+1)=b(n)*floor(n/b(n))+n*floor(b(n)/n) then a(n)=b(n+3)
%t Table[3*2^(n-1), {n, 1, 5}, {3*2^(n-1)}] // Flatten (* _Jean-François Alcover_, Nov 24 2016 *)
%K easy,nonn
%O 1,1
%A _Benoit Cloitre_, Aug 17 2002
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