Total number of palindromic primes in base 4 with n digits.

Terms

a(0) =2a(1) =1a(2) =3a(3) =0a(4) =10a(5) =0a(6) =29a(7) =0a(8) =97a(9) =0a(10) =293a(11) =0a(12) =982a(13) =0a(14) =3385a(15) =0a(16) =11631a(17) =0a(18) =41375a(19) =0a(20) =152900a(21) =0a(22) =541525a(23) =0a(24) =1996031a(25) =0a(26) =7463249a(27) =0a(28) =27801721a(29) =0