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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 10 |
| 4 | 25 |
| 5 | 76 |
| 6 | 263 |
| 7 | 978 |
| 8 | 3773 |
| 9 | 14824 |
| 10 | 58771 |
| 11 | 234046 |
| 12 | 934121 |
| 13 | 3732372 |
| 14 | 14921279 |
| 15 | 59668714 |
| 16 | 238642069 |
| 17 | 954502720 |
| 18 | 3817879787 |
| 19 | 15271256982 |
| 20 | 61084503617 |
| 21 | 244336965868 |
| 22 | 977345766295 |
| 23 | 3909378870850 |
| 24 | 15637507094765 |
| 25 | 62550011601816 |
[3,5,10,25,76,263,978,3773,14824,58771,234046, 934121,3732372,14921279,59668714,238642069, 954502720,3817879787,15271256982,61084503617, 244336965868,977345766295,3909378870850, 15637507094765,62550011601816] |