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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 881 |
| 3 | 9323 |
| 4 | 1437659 |
| 5 | 2105347 |
| 6 | 2505383 |
| 7 | 4298881 |
| 8 | 13671881 |
| 9 | 21340381 |
| 10 | 40147379 |
| 11 | 45774427 |
| 12 | 53517617 |
| 13 | 105484567 |
| 14 | 145578131 |
| 15 | 148777537 |
| 16 | 187116299 |
| 17 | 253852843 |
| 18 | 267909277 |
| 19 | 381079579 |
| 20 | 431409131 |
| 21 | 471934007 |
| 22 | 544981387 |
| 23 | 685805273 |
| 24 | 778992493 |
[13,881,9323,1437659,2105347,2505383,4298881, 13671881,21340381,40147379,45774427,53517617, 105484567,145578131,148777537,187116299,253852843, 267909277,381079579,431409131,471934007,544981387, 685805273,778992493] |