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%I A025559 #3 Mar 30 2012 18:56:04
%S A025559 1,2,5,22,24,158,331,958,986,10594,10804,138142,140122,138406,279815,
%T A025559 4711810,4751850,89604470,90217082,89662814,90166694,2063252482,
%U A025559 2072952172,10320142286,10361328662,30969579386,31075814086,898330271594,901007386034
%N A025559 (1/1 - 1/3 + 1/6 + ... + d/C(n+1,2))*LCM{1,3,6,...,C(n+1,2)}, where d = (-1)^n.
%K A025559 nonn
%O A025559 1,2
%A A025559 _Clark Kimberling_

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