Expansion of ( 1-x-x^2 ) / ( 1-2*x-2*x^2+x^3+x^4 ).

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =18a(5) =46a(6) =118a(7) =303a(8) =778a(9) =1998a(10) =5131a(11) =13177a(12) =33840a(13) =86905a(14) =223182a(15) =573157a(16) =1471933a(17) =3780093a(18) =9707713a(19) =24930522a(20) =64024444a(21) =164422126a(22) =422254905a(23) =1084399096a(24) =2784861432a(25) =7151844025a(26) =18366756913a(27) =47167941348a(28) =121132691065