Expansion of (1+x^18)/((1-x)*(1-x^2)*(1-x^3)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =7a(7) =8a(8) =10a(9) =12a(10) =14a(11) =16a(12) =19a(13) =21a(14) =24a(15) =27a(16) =30a(17) =33a(18) =38a(19) =41a(20) =46a(21) =51a(22) =56a(23) =61a(24) =68a(25) =73a(26) =80a(27) =87a(28) =94a(29) =101