Primes having only {1, 2, 8} as digits.

Terms

a(0) =2a(1) =11a(2) =181a(3) =211a(4) =281a(5) =811a(6) =821a(7) =881a(8) =1181a(9) =1811a(10) =2111a(11) =2221a(12) =2281a(13) =8111a(14) =8221a(15) =8821a(16) =11821a(17) =12211a(18) =12281a(19) =12821a(20) =18121a(21) =18181a(22) =18211a(23) =21121a(24) =21211a(25) =21221a(26) =21821a(27) =21881a(28) =22111a(29) =22811