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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 9 |
| 8 | 9 |
| 9 | 33 |
| 10 | 33 |
| 11 | 153 |
| 12 | 153 |
| 13 | 3123 |
| 14 | 3123 |
| 15 | 118071 |
| 16 | 118071 |
| 17 | 4682615 |
| 18 | 4682615 |
| 19 | 398324801 |
| 20 | 398324801 |
| 21 | 67438703311 |
| 22 | 67438703311 |
| 23 | 18607359075661 |
| 24 | 18607359075661 |
| 25 | 8942742118054707 |
[1,1,1,1,1,1,9,9,33,33,153,153,3123,3123,118071, 118071,4682615,4682615,398324801,398324801, 67438703311,67438703311,18607359075661, 18607359075661,8942742118054707] |