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Duplicate of A005153.
0

%I #2 Dec 06 2006 03:00:00

%S 1,2,4,6,8,12,16,18,20,24,28,30,32,36,40,42,48,54,56,60,64,66,72,78,80

%N Duplicate of A005153.

%K dead

%O 1,2