Hankel transform of A186039.

Terms

a(0) =1a(1) =-2a(2) =-4a(3) =8a(4) =0a(5) =0a(6) =64a(7) =256a(8) =256a(9) =-4608a(10) =-1024a(11) =47104a(12) =192512a(13) =-81920a(14) =-901120a(15) =7077888a(16) =-5832704a(17) =786432a(18) =143917056a(19) =1167065088a(20) =2945449984a(21) =-5890899968a(22) =-2445279232a(23) =58082721792a(24) =-70145540096