Total number of palindromic primes in base 9 with n digits.

Terms

a(0) =4a(1) =0a(2) =13a(3) =0a(4) =64a(5) =0a(6) =418a(7) =0a(8) =2917a(9) =0a(10) =20839a(11) =0a(12) =157743a(13) =0a(14) =1246700a(15) =0a(16) =9711161a(17) =0a(18) =78020556a(19) =0