p-INVERT of A103889, where p(S) = 1 - S - S^2.

Terms

a(0) =2a(1) =9a(2) =36a(3) =153a(4) =624a(5) =2584a(6) =10632a(7) =43865a(8) =180774a(9) =745347a(10) =3072528a(11) =12666854a(12) =52218790a(13) =215273737a(14) =887468000a(15) =3658604277a(16) =15082652352a(17) =62178493132a(18) =256331858332