Triangle read by rows: T(n, k) = 2^k - binomial(n, k+1).

Terms

a(0) =1a(1) =0a(2) =2a(3) =-1a(4) =1a(5) =4a(6) =-2a(7) =-1a(8) =3a(9) =8a(10) =-3a(11) =-4a(12) =0a(13) =7a(14) =16a(15) =-4a(16) =-8a(17) =-6a(18) =3a(19) =15a(20) =32a(21) =-5a(22) =-13a(23) =-16a(24) =-7a(25) =10a(26) =31a(27) =64a(28) =-6a(29) =-19