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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-2a(5) =1a(6) =1a(7) =-13a(8) =-13a(9) =1a(10) =1a(11) =-44a(12) =-74a(13) =-44a(14) =1a(15) =1a(16) =-123a(17) =-278a(18) =-278a(19) =-123a(20) =1a(21) =1a(22) =-314a(23) =-881a(24) =-1196a(25) =-881a(26) =-314a(27) =1a(28) =1a(29) =-761