%I #4 Mar 30 2012 17:20:57
%S 1,1,1,1,3,15,57,169,443,1211,3855,13495,46749,154397,496203,1611499,
%T 5395893,18473853,63472005,216711453,737070887,2515433411,8649866677,
%U 29935649141,103896813439,360791085751,1253684914707,4364603935363
%N Recip transform of 2*(1 + x^2 + x^6)-1/(1-x).
%C Sign diagram of generating sequence: +-+---+--------...
%K nonn
%O 0,5
%A _Olivier GĂ©rard_
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