The q-analog T(q; n,k) of the triangle A163626 for 0 <= k <= n, for q = 2.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-4a(5) =3a(6) =1a(7) =-13a(8) =33a(9) =-21a(10) =1a(11) =-40a(12) =270a(13) =-546a(14) =315a(15) =1a(16) =-121a(17) =2010a(18) =-10080a(19) =17955a(20) =-9765a(21) =1a(22) =-364a(23) =14433a(24) =-165270a(25) =707805a(26) =-1171800a(27) =615195a(28) =1a(29) =-1093