Expansion of b(3)*b(4)/(1 - 2*x + x^2 - x^3 + x^4), where b(k) = (1-x^k)/(1-x).

Terms

a(0) =1a(1) =4a(2) =10a(3) =20a(4) =35a(5) =57a(6) =89a(7) =136a(8) =205a(9) =306a(10) =454a(11) =671a(12) =989a(13) =1455a(14) =2138a(15) =3139a(16) =4606a(17) =6756a(18) =9907a(19) =14525a(20) =21293a(21) =31212a(22) =45749a(23) =67054a(24) =98278a(25) =144039a(26) =211105a(27) =309395a(28) =453446a(29) =664563