Indices of primes in the sequence defined by A(0) = 47, A(n) = 10*A(n-1) - 33 for n > 0.

Terms

a(0) =0a(1) =2a(2) =4a(3) =5a(4) =7a(5) =14a(6) =25a(7) =52a(8) =59a(9) =96a(10) =182a(11) =204a(12) =301a(13) =395a(14) =455a(15) =466a(16) =606a(17) =827a(18) =1859a(19) =2742a(20) =4272a(21) =4780a(22) =5711a(23) =6037a(24) =6636a(25) =9221a(26) =10831a(27) =18864a(28) =25847a(29) =42246