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%I #3 Jan 13 2016 22:56:14
%S 1,2,6,24,116,642,3954,26528,191368,1468514,11899358,101177336,
%T 898486540,8299327770,79481787362,786962615104,8036673996944,
%U 84475005423394,912287361123926,10106308353804312,114683674053106724,1331405224273188370,15795339232664163058,191299235558676809056,2362987021847135118872,29744438703886126773794,381251029053155869953294
%N a(n) = A152392(n)/n for n>=1.
%C A152392 = Column 0 of triangle A152391.
%Y Cf. A152392, A152391.
%K nonn
%O 1,2
%A _Paul D. Hanna_, Jan 13 2016