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

Terms

a(0) =1a(1) =3a(2) =8a(3) =19a(4) =42a(5) =89a(6) =183a(7) =368a(8) =728a(9) =1422a(10) =2750a(11) =5276a(12) =10057a(13) =19069a(14) =35998a(15) =67707a(16) =126954a(17) =237423a(18) =443029a(19) =825116a(20) =1534224a(21) =2848736a(22) =5283100a(23) =9787452a(24) =18115705a(25) =33504067a(26) =61921452a(27) =114373263a(28) =211145050a(29) =389618073