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A097198 G.f.: q^(2*n)* Product_{m=0..n-1} (1-q^(2*m+1))^2. 0

%I

%S 1,0,1,-2,2,-2,2,-4,6,-6,7,-10,12,-12,16,-22,25,-28,34,-42,50,-56,64,

%T -80,94,-104,122,-146,168,-190,218,-256,295,-330,378,-440,500,-560,

%U 638,-734,830,-930,1053,-1198,1352,-1510,1696,-1924,2160,-2404,2696,-3034,3390,-3770,4208,-4712,5252,-5824

%N G.f.: q^(2*n)* Product_{m=0..n-1} (1-q^(2*m+1))^2.

%C Inspired by A000700.

%K sign

%O 0,4

%A _N. J. A. Sloane_, Sep 17 2004

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Last modified September 27 22:36 EDT 2020. Contains 337388 sequences. (Running on oeis4.)