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Duplicate of A054225.
1

%I #22 Jul 09 2017 20:54:32

%S 1,1,1,2,2,2,3,4,4,3,5,7,9,7,5,7,12,16,16,12,7,11,19,29,31,29,19,11

%N Duplicate of A054225.

%K dead

%O 0,4

%A _N. J. A. Sloane_, Mar 22 2001