Expansion of (1-6x)/(1-6x-11x^2).

Terms

a(0) =1a(1) =0a(2) =11a(3) =66a(4) =517a(5) =3828a(6) =28655a(7) =214038a(8) =1599433a(9) =11951016a(10) =89299859a(11) =667260330a(12) =4985860429a(13) =37255026204a(14) =278374621943