a(n) is the least number with exactly n permutations of digits that are primes.

Terms

a(0) =1a(1) =2a(2) =13a(3) =103a(4) =107a(5) =1007a(6) =1036a(7) =1019a(8) =1013a(9) =1049a(10) =1079a(11) =1237a(12) =10099a(13) =10013a(14) =10135a(15) =10123a(16) =10039a(17) =10127a(18) =10079a(19) =10238a(20) =10234a(21) =10235a(22) =10139a(23) =10478a(24) =12349a(25) =12347a(26) =10378a(27) =12359a(28) =14579a(29) =10789