Hit polynomials.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =20a(5) =104a(6) =775a(7) =6140a(8) =55427a(9) =553802a(10) =6087992a(11) =72994152a(12) =948103477a(13) =13262133736a(14) =198769630061