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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 31 |
| 6 | 41 |
| 7 | 43 |
| 8 | 53 |
| 9 | 61 |
| 10 | 71 |
| 11 | 73 |
| 12 | 83 |
| 13 | 97 |
| 14 | 421 |
| 15 | 431 |
| 16 | 521 |
| 17 | 541 |
| 18 | 631 |
| 19 | 641 |
| 20 | 643 |
| 21 | 653 |
| 22 | 743 |
| 23 | 751 |
| 24 | 761 |
| 25 | 821 |
| 26 | 853 |
| 27 | 863 |
| 28 | 941 |
| 29 | 953 |
| 30 | 971 |
| 31 | 983 |
| 32 | 5431 |
| 33 | 6421 |
| 34 | 6521 |
| 35 | 7321 |
| 36 | 7541 |
| 37 | 7621 |
| 38 | 7643 |
| 39 | 8431 |
| 40 | 8521 |
| 41 | 8543 |
| 42 | 8641 |
| 43 | 8731 |
| 44 | 8741 |
| 45 | 8753 |
| 46 | 8761 |
| 47 | 9421 |
| 48 | 9431 |
| 49 | 9521 |
| 50 | 9631 |
| 51 | 9643 |
[2,3,5,7,31,41,43,53,61,71,73,83,97,421,431,521, 541,631,641,643,653,743,751,761,821,853,863,941, 953,971,983,5431,6421,6521,7321,7541,7621,7643, 8431,8521,8543,8641,8731,8741,8753,8761,9421,9431, 9521,9631,9643] |