Little Hankel transform of A002487.

Terms

a(0) =-1a(1) =3a(2) =-5a(3) =7a(4) =-5a(5) =7a(6) =-11a(7) =13a(8) =-11a(9) =19a(10) =-21a(11) =19a(12) =-11a(13) =13a(14) =-19a(15) =21a(16) =-19a(17) =37a(18) =-47a(19) =49a(20) =-31a(21) =39a(22) =-45a(23) =39a(24) =-31a(25) =49a(26) =-47a(27) =37a(28) =-19a(29) =21