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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 25 |
| 3 | 41 |
| 4 | 161 |
| 5 | 487 |
| 6 | 1689 |
| 7 | 5849 |
| 8 | 19981 |
| 9 | 67459 |
| 10 | 221953 |
| 11 | 709677 |
| 12 | 2225181 |
| 13 | 6874957 |
| 14 | 21019457 |
| 15 | 63845081 |
| 16 | 193077349 |
| 17 | 582247055 |
| 18 | 1752693185 |
| 19 | 5269930487 |
| 20 | 15833493125 |
| 21 | 47548549519 |
| 22 | 142743601321 |
| 23 | 428431672069 |
| 24 | 1285708580949 |
| 25 | 3857979555851 |
[5,25,41,161,487,1689,5849,19981,67459,221953, 709677,2225181,6874957,21019457,63845081, 193077349,582247055,1752693185,5269930487, 15833493125,47548549519,142743601321,428431672069, 1285708580949,3857979555851] |