Smallest prime of the form 10^k - prime(n), or 0 if no such prime exists.

Terms

a(0) =0a(1) =7a(2) =5a(3) =3a(4) =89a(5) =0a(6) =83a(7) =0a(8) =977a(9) =71a(10) =0a(11) =0a(12) =59a(13) =0a(14) =53a(15) =47a(16) =41a(17) =0a(18) =0a(19) =29a(20) =0a(21) =0a(22) =17a(23) =11a(24) =3a(25) =999999999899a(26) =0a(27) =999999893a(28) =0a(29) =887