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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 31 |
| 3 | 2801 |
| 4 | 3541 |
| 5 | 5113 |
| 6 | 10303 |
| 7 | 17293 |
| 8 | 30941 |
| 9 | 88741 |
| 10 | 292561 |
| 11 | 732541 |
| 12 | 1191373 |
| 13 | 1395943 |
| 14 | 2922391 |
| 15 | 3281533 |
| 16 | 7450171 |
| 17 | 7781311 |
| 18 | 12190573 |
| 19 | 15916111 |
| 20 | 22292563 |
| 21 | 28792661 |
| 22 | 67757593 |
| 23 | 93886411 |
| 24 | 103052953 |
| 25 | 112137511 |
| 26 | 124802413 |
| 27 | 135059263 |
| 28 | 181427431 |
[13,31,2801,3541,5113,10303,17293,30941,88741, 292561,732541,1191373,1395943,2922391,3281533, 7450171,7781311,12190573,15916111,22292563, 28792661,67757593,93886411,103052953,112137511, 124802413,135059263,181427431] |