Indices of primes in sequence defined by A(0) = 89, A(n) = 10*A(n-1) - 81 for n > 0.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =11a(5) =19a(6) =20a(7) =36a(8) =41a(9) =54a(10) =59a(11) =97a(12) =99a(13) =103a(14) =222a(15) =236a(16) =259a(17) =500a(18) =569a(19) =599a(20) =697a(21) =8856a(22) =20910a(23) =24344a(24) =31963a(25) =67741a(26) =162923