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%I #4 Mar 30 2012 17:20:57
%S 1,1,1,1,1,1,3,19,93,353,1125,3173,8221,20297,50055,130255,370545,
%T 1140001,3636265,11563041,35888977,108146737,317966187,922132531,
%U 2672794621,7832167585,23346616525,70754228885,216792576093
%N Recip transform of 2*(1 + x^2 + x^4)-1/(1-x).
%C Sign diagram of generating sequence: +-+-+----------...
%K nonn
%O 0,7
%A _Olivier Gérard_
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