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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 17 |
| 4 | 23 |
| 5 | 61 |
| 6 | 107 |
| 7 | 421 |
| 8 | 1103 |
| 9 | 5777 |
| 10 | 7563 |
| 11 | 19801 |
| 12 | 103681 |
| 13 | 135721 |
| 14 | 355323 |
| 15 | 1860497 |
| 16 | 2435423 |
| 17 | 6376021 |
| 18 | 11128427 |
| 19 | 43701901 |
| 20 | 114413063 |
| 21 | 599074577 |
| 22 | 784198803 |
| 23 | 2053059121 |
| 24 | 10749957121 |
| 25 | 14071876561 |
| 26 | 36840651123 |
| 27 | 192900153617 |
[1,3,17,23,61,107,421,1103,5777,7563,19801,103681, 135721,355323,1860497,2435423,6376021,11128427, 43701901,114413063,599074577,784198803,2053059121, 10749957121,14071876561,36840651123,192900153617] |