a(n) is the number of prime 5-digit palindromes in base n.

Terms

a(0) =2a(1) =3a(2) =10a(3) =18a(4) =21a(5) =41a(6) =47a(7) =64a(8) =93a(9) =106a(10) =170a(11) =171a(12) =185a(13) =227a(14) =314a(15) =345a(16) =422a(17) =464a(18) =526a(19) =571a(20) =719a(21) =806a(22) =928a(23) =972a(24) =1179a(25) =1237a(26) =1354a(27) =1508a(28) =1754a(29) =1778