Primes having only {2, 5, 6, 9} as digits.

Terms

a(0) =2a(1) =5a(2) =29a(3) =59a(4) =229a(5) =269a(6) =569a(7) =599a(8) =659a(9) =929a(10) =2269a(11) =2659a(12) =2699a(13) =2969a(14) =2999a(15) =5569a(16) =5659a(17) =5669a(18) =6229a(19) =6269a(20) =6299a(21) =6529a(22) =6569a(23) =6599a(24) =6659a(25) =6959a(26) =9629a(27) =9929a(28) =22229a(29) =22259