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Duplicate of A050001.
0

%I #3 May 11 2007 03:00:00

%S 1,5,2,4,19,6,16,26,3,18,23,28,10,15,20,25,61,7,12,35,17,22,76,27,45

%N Duplicate of A050001.

%K dead

%O 1,2