Hankel transform of Sum_{k=0..n} C(2k,k).

Terms

a(0) =1a(1) =0a(2) =-4a(3) =-8a(4) =0a(5) =32a(6) =64a(7) =0a(8) =-256a(9) =-512a(10) =0a(11) =2048a(12) =4096a(13) =0a(14) =-16384a(15) =-32768a(16) =0a(17) =131072a(18) =262144a(19) =0a(20) =-1048576a(21) =-2097152a(22) =0a(23) =8388608a(24) =16777216a(25) =0a(26) =-67108864a(27) =-134217728a(28) =0a(29) =536870912