Primes with first digit 5.

Terms

a(0) =5a(1) =53a(2) =59a(3) =503a(4) =509a(5) =521a(6) =523a(7) =541a(8) =547a(9) =557a(10) =563a(11) =569a(12) =571a(13) =577a(14) =587a(15) =593a(16) =599a(17) =5003a(18) =5009a(19) =5011a(20) =5021a(21) =5023a(22) =5039a(23) =5051a(24) =5059a(25) =5077a(26) =5081a(27) =5087a(28) =5099a(29) =5101