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A018781 Duplicate of A003523. 0

%I #3 Nov 10 2007 03:00:00

%S 1,3,11,31,33,93,341,1023

%N Duplicate of A003523.

%K dead

%O 1,2

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Last modified February 25 13:12 EST 2024. Contains 370330 sequences. (Running on oeis4.)