Expansion of 1/(x^k*(1-x-3*x^(k+1))) for k=9.

Terms

a(0) =1a(1) =4a(2) =7a(3) =10a(4) =13a(5) =16a(6) =19a(7) =22a(8) =25a(9) =28a(10) =31a(11) =43a(12) =64a(13) =94a(14) =133a(15) =181a(16) =238a(17) =304a(18) =379a(19) =463a(20) =556a(21) =685a(22) =877a(23) =1159a(24) =1558a(25) =2101a(26) =2815a(27) =3727a(28) =4864a(29) =6253