Expansion of x^2/((1-2*x)*(1+3*x)).

Terms

a(0) =0a(1) =0a(2) =1a(3) =-1a(4) =7a(5) =-13a(6) =55a(7) =-133a(8) =463a(9) =-1261a(10) =4039a(11) =-11605a(12) =35839a(13) =-105469a(14) =320503a(15) =-953317a(16) =2876335a(17) =-8596237a(18) =25854247a(19) =-77431669a(20) =232557151a(21) =-697147165a(22) =2092490071a(23) =-6275373061a(24) =18830313487a(25) =-56482551853a(26) =169464432775a(27) =-508359743893