T(n, m) = 2^m * binomial(-m, n), for 0 <= m <= n, n >= 0, triangle read by rows.

Terms

a(0) =1a(1) =0a(2) =-2a(3) =0a(4) =2a(5) =12a(6) =0a(7) =-2a(8) =-16a(9) =-80a(10) =0a(11) =2a(12) =20a(13) =120a(14) =560a(15) =0a(16) =-2a(17) =-24a(18) =-168a(19) =-896a(20) =-4032a(21) =0a(22) =2a(23) =28a(24) =224a(25) =1344a(26) =6720a(27) =29568a(28) =0a(29) =-2