Expansion of (1-5*x)/((1-2*x)*(1-6*x)).

Terms

a(0) =1a(1) =3a(2) =12a(3) =60a(4) =336a(5) =1968a(6) =11712a(7) =70080a(8) =420096a(9) =2519808a(10) =15117312a(11) =90700800a(12) =544198656a(13) =3265179648a(14) =19591053312a(15) =117546270720a(16) =705277526016