Primes having only {0, 5, 6, 9} as digits.

Terms

a(0) =5a(1) =59a(2) =509a(3) =569a(4) =599a(5) =659a(6) =5009a(7) =5059a(8) =5099a(9) =5569a(10) =5659a(11) =5669a(12) =6569a(13) =6599a(14) =6659a(15) =6959a(16) =9059a(17) =50069a(18) =50599a(19) =50909a(20) =50969a(21) =55009a(22) =55609a(23) =56009a(24) =56099a(25) =56509a(26) =56569a(27) =56599a(28) =56659a(29) =56909