Primes having only {1, 2, 6} as digits.

Terms

a(0) =2a(1) =11a(2) =61a(3) =211a(4) =661a(5) =1621a(6) =2111a(7) =2161a(8) =2221a(9) =2621a(10) =6121a(11) =6211a(12) =6221a(13) =6661a(14) =11161a(15) =11261a(16) =11621a(17) =12161a(18) =12211a(19) =12611a(20) =16111a(21) =16661a(22) =21121a(23) =21211a(24) =21221a(25) =21611a(26) =21661a(27) =22111a(28) =22621a(29) =26111