Primes having only {2, 3, 6} as digits.

Terms

a(0) =2a(1) =3a(2) =23a(3) =223a(4) =233a(5) =263a(6) =2333a(7) =2633a(8) =2663a(9) =3323a(10) =3623a(11) =6263a(12) =6323a(13) =23333a(14) =23623a(15) =23633a(16) =23663a(17) =26263a(18) =26633a(19) =32233a(20) =32323a(21) =32363a(22) =32633a(23) =33223a(24) =33623a(25) =36263a(26) =62233a(27) =62323a(28) =62633a(29) =222323