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

Terms

a(0) =1a(1) =6a(2) =28a(3) =125a(4) =546a(5) =2371a(6) =10304a(7) =44838a(8) =195209a(9) =849896a(10) =3700025a(11) =16107530a(12) =70121400a(13) =305262325a(14) =1328913506a(15) =5785228011a(16) =25185131956a(17) =109639724218a(18) =477300202625