Number of palindromic primes less than 10^n.

Terms

a(0) =0a(1) =4a(2) =5a(3) =20a(4) =20a(5) =113a(6) =113a(7) =781a(8) =781a(9) =5953a(10) =5953a(11) =47995a(12) =47995a(13) =401696a(14) =401696a(15) =3438339a(16) =3438339a(17) =30483565a(18) =30483565a(19) =269577430a(20) =269577430a(21) =2427668363a(22) =2427668363a(23) =22170468927a(24) =22170468927a(25) =202985860292a(26) =202985860292