Triangle of q-binomial coefficients for q=-10.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-9a(5) =1a(6) =1a(7) =91a(8) =91a(9) =1a(10) =1a(11) =-909a(12) =9191a(13) =-909a(14) =1a(15) =1a(16) =9091a(17) =918191a(18) =918191a(19) =9091a(20) =1a(21) =1a(22) =-90909a(23) =91828191a(24) =-917272809a(25) =91828191a(26) =-90909a(27) =1a(28) =1a(29) =909091