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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 1129 |
| 3 | 19777 |
| 4 | 44221 |
| 5 | 109507 |
| 6 | 140629 |
| 7 | 268123 |
| 8 | 455881 |
| 9 | 715567 |
| 10 | 820129 |
| 11 | 2471629 |
| 12 | 3796879 |
| 13 | 4108801 |
| 14 | 9272713 |
| 15 | 12308683 |
| 16 | 13687879 |
| 17 | 15944053 |
| 18 | 18435451 |
| 19 | 25228993 |
| 20 | 26317867 |
| 21 | 27437629 |
| 22 | 32234197 |
| 23 | 41917171 |
| 24 | 45001903 |
| 25 | 49907101 |
| 26 | 53367673 |
| 27 | 73085413 |
[13,1129,19777,44221,109507,140629,268123,455881, 715567,820129,2471629,3796879,4108801,9272713, 12308683,13687879,15944053,18435451,25228993, 26317867,27437629,32234197,41917171,45001903, 49907101,53367673,73085413] |