Primes having only {2, 6, 9} as digits.

Terms

a(0) =2a(1) =29a(2) =229a(3) =269a(4) =929a(5) =2269a(6) =2699a(7) =2969a(8) =2999a(9) =6229a(10) =6269a(11) =6299a(12) =9629a(13) =9929a(14) =22229a(15) =22669a(16) =22699a(17) =26669a(18) =26699a(19) =29269a(20) =29629a(21) =29669a(22) =62299a(23) =62929a(24) =62969a(25) =66629a(26) =69929a(27) =92269a(28) =92669a(29) =92699