Primes having only {0, 3, 6, 7} as digits.

Terms

a(0) =3a(1) =7a(2) =37a(3) =67a(4) =73a(5) =307a(6) =337a(7) =367a(8) =373a(9) =607a(10) =673a(11) =677a(12) =733a(13) =773a(14) =3037a(15) =3067a(16) =3307a(17) =3373a(18) =3607a(19) =3637a(20) =3673a(21) =3677a(22) =3733a(23) =3767a(24) =6007a(25) =6037a(26) =6067a(27) =6073a(28) =6337a(29) =6367