Primes having only {0, 6, 7, 8} as digits.

Terms

a(0) =7a(1) =67a(2) =607a(3) =677a(4) =787a(5) =877a(6) =887a(7) =6007a(8) =6067a(9) =6607a(10) =7607a(11) =7687a(12) =7867a(13) =7877a(14) =8087a(15) =8677a(16) =8707a(17) =8807a(18) =8867a(19) =8887a(20) =60077a(21) =60607a(22) =60887a(23) =66067a(24) =66877a(25) =67607a(26) =67777a(27) =67807a(28) =67867a(29) =68087