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Erroneous version of A032522.
0

%I #7 Dec 11 1999 03:00:00

%S 1,0,0,2,2,4,8,4,16,12,48,80,136,420,1240,2872,7652,18104,50184

%N Erroneous version of A032522.

%K dead

%O 1,4