Triangle read by rows: T(n, k) = 2^k * hypergeom([-n, -k], [], -1/2).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =-2a(6) =1a(7) =-1a(8) =-2a(9) =2a(10) =1a(11) =-2a(12) =0a(13) =8a(14) =8a(15) =1a(16) =-3a(17) =4a(18) =8a(19) =-24a(20) =-88a(21) =1a(22) =-4a(23) =10a(24) =-4a(25) =-56a(26) =32a(27) =592a(28) =1a(29) =-5