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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 3 |
| 3 | 53 |
| 4 | 303 |
| 5 | 2178 |
| 6 | 5303 |
| 7 | 67803 |
| 8 | 67803 |
| 9 | 849053 |
| 10 | 6708428 |
| 11 | 6708428 |
| 12 | 6708428 |
| 13 | 983270928 |
| 14 | 983270928 |
| 15 | 25397333428 |
| 16 | 147467645928 |
| 17 | 605231317803 |
| 18 | 1368170770928 |
| 19 | 5182868036553 |
| 20 | 43329840692803 |
| 21 | 43329840692803 |
| 22 | 43329840692803 |
| 23 | 4811701422724053 |
| 24 | 52495417243036553 |
[0,3,3,53,303,2178,5303,67803,67803,849053, 6708428,6708428,6708428,983270928,983270928, 25397333428,147467645928,605231317803, 1368170770928,5182868036553,43329840692803, 43329840692803,43329840692803,4811701422724053, 52495417243036553] |