Alcuin's sequence: expansion of x^3/((1-x^2)*(1-x^3)*(1-x^4)).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =1a(7) =2a(8) =1a(9) =3a(10) =2a(11) =4a(12) =3a(13) =5a(14) =4a(15) =7a(16) =5a(17) =8a(18) =7a(19) =10a(20) =8a(21) =12a(22) =10a(23) =14a(24) =12a(25) =16a(26) =14a(27) =19a(28) =16a(29) =21