Triangle of q-binomial coefficients for q=-5.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-4a(5) =1a(6) =1a(7) =21a(8) =21a(9) =1a(10) =1a(11) =-104a(12) =546a(13) =-104a(14) =1a(15) =1a(16) =521a(17) =13546a(18) =13546a(19) =521a(20) =1a(21) =1a(22) =-2604a(23) =339171a(24) =-1679704a(25) =339171a(26) =-2604a(27) =1a(28) =1a(29) =13021