Expansion of 1/((1-4x)(1-6x)(1-7x)).

Terms

a(0) =1a(1) =17a(2) =195a(3) =1885a(4) =16571a(5) =137277a(6) =1092715a(7) =8456045a(8) =64100091a(9) =478409437a(10) =3528167435a(11) =25777174605a(12) =186937014811