Expansion of 1/((1-4x)(1-5x)(1-7x)).

Terms

a(0) =1a(1) =16a(2) =173a(3) =1580a(4) =13161a(5) =103656a(6) =787333a(7) =5836420a(8) =42545921a(9) =306538496a(10) =2190403293a(11) =15560186460a(12) =110074899481a(13) =776359376536