Triangle read by rows, T(n,k) = 2^(n-k)*[x^k] Euler_polynomial(n, x), for n >= 0, k >= 0.

Terms

a(0) =1a(1) =-1a(2) =1a(3) =0a(4) =-2a(5) =1a(6) =2a(7) =0a(8) =-3a(9) =1a(10) =0a(11) =8a(12) =0a(13) =-4a(14) =1a(15) =-16a(16) =0a(17) =20a(18) =0a(19) =-5a(20) =1a(21) =0a(22) =-96a(23) =0a(24) =40a(25) =0a(26) =-6a(27) =1a(28) =272a(29) =0