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%I #4 Mar 30 2012 17:20:57
%S 1,1,3,11,43,181,797,3625,16903,80367,388157,1899093,9392501,46881963,
%T 235863891,1194811579,6089105493,31197589525,160601295503,
%U 830278627047,4308870293511,22439404479929,117228234264769,614197712145461
%N Recip transform of 2*(1 + x^4 + x^5 + x^6)-1/(1-x).
%C Sign diagram of generating sequence: +---+++--------...
%K nonn
%O 0,3
%A _Olivier Gérard_