Hankel transform of A186035.

Terms

a(0) =1a(1) =-2a(2) =-4a(3) =8a(4) =0a(5) =0a(6) =0a(7) =128a(8) =1024a(9) =-2048a(10) =1024a(11) =24576a(12) =45056a(13) =155648a(14) =-3850240a(15) =20152320a(16) =6946816a(17) =-7602176a(18) =-786432a(19) =3670016a(20) =3145728a(21) =-2097152a(22) =-25165824a(23) =58720256a(24) =100663296a(25) =-234881024