The q-analog T(q; n,k) of the triangle A163626 for 0 <= k <= n, for q=3.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-5a(5) =4a(6) =1a(7) =-21a(8) =72a(9) =-52a(10) =1a(11) =-85a(12) =1020a(13) =-3016a(14) =2080a(15) =1a(16) =-341a(17) =13600a(18) =-133900a(19) =372320a(20) =-251680a(21) =1a(22) =-1365a(23) =178164a(24) =-5532800a(25) =50406720a(26) =-136662240a(27) =91611520a(28) =1a(29) =-5461