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Duplicate of A059968.
1

%I #29 Feb 06 2020 22:41:06

%S 1,1,10,145,2470,46060,910252,18730855,397089550,8612835715,

%T 190223180840,4263421511271,96723482198980,2216905597676000,

%U 51256802757808320

%N Duplicate of A059968.

%K dead

%O 0,3