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

Terms

a(0) =7a(1) =787a(2) =877a(3) =887a(4) =7877a(5) =8087a(6) =8707a(7) =8807a(8) =8887a(9) =70877a(10) =78007a(11) =78707a(12) =78787a(13) =78877a(14) =78887a(15) =80077a(16) =80777a(17) =87877a(18) =87887a(19) =88007a(20) =88807a(21) =700087a(22) =700877a(23) =707887a(24) =708007a(25) =777787a(26) =777877a(27) =778777a(28) =780707a(29) =780877