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%I #4 Mar 30 2012 17:20:57
%S 1,1,3,11,45,195,885,4153,19983,98055,488805,2468545,12602743,
%T 64937493,337264163,1763752075,9279601413,49084160037,260867197263,
%U 1392352081031,7460146494529,40110432099247,216343171411657
%N Recip transform of 2*(1 + x^5 + x^6)-1/(1-x).
%C Sign diagram of generating sequence: +----++--------...
%K nonn
%O 0,3
%A _Olivier Gérard_