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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 16 |
| 5 | 36 |
| 6 | 244 |
| 7 | 315 |
| 8 | 2577 |
| 9 | 9500 |
| 10 | 17596 |
| 11 | 25551 |
| 12 | 32193 |
| 13 | 32835 |
| 14 | 36504 |
| 15 | 75136 |
[0,1,3,16,36,244,315,2577,9500,17596,25551,32193, 32835,36504,75136] |