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

Terms

a(0) =1a(1) =2a(2) =6a(3) =19a(4) =56a(5) =168a(6) =505a(7) =1514a(8) =4542a(9) =13627a(10) =40880a(11) =122640a(12) =367921a(13) =1103762a(14) =3311286a(15) =9933859a(16) =29801576a(17) =89404728a(18) =268214185a(19) =804642554a(20) =2413927662a(21) =7241782987a(22) =21725348960a(23) =65176046880a(24) =195528140641a(25) =586584421922