A modular binomial transform of 10^n.

Terms

a(0) =1a(1) =-1a(2) =9a(3) =1a(4) =89a(5) =-99a(6) =991a(7) =-1a(8) =9909a(9) =-9899a(10) =88991a(11) =9999a(12) =899911a(13) =-999901a(14) =9999009a(15) =1a(16) =99990089a(17) =-99990099a(18) =899910991a(19) =99989999a(20) =8899099911a(21) =-9898999901a(22) =99089999009a(23) =-99999999a(24) =990999990091a(25) =-989999990101a(27) =999999990001