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A138188 Expansion of (1-2x-2x^2-x^3)/(1+x+x^2-x^3-x^4-x^5). 2

%I

%S 1,-3,0,3,-5,0,5,-7,0,7,-9,0,9,-11,0,11,-13,0,13,-15,0,15,-17,0,17,

%T -19,0,19,-21,0,21,-23,0,23,-25,0,25,-27,0,27,-29,0,29,-31,0,31,-33,0,

%U 33,-35,0,35,-37,0,37,-39,0,39,-41,0,41

%N Expansion of (1-2x-2x^2-x^3)/(1+x+x^2-x^3-x^4-x^5).

%C Partial sums of A138187. Partial sums are A138189.

%K easy,sign

%O 0,2

%A _Paul Barry_, Mar 04 2008

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Last modified May 20 22:14 EDT 2013. Contains 225464 sequences.