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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 16 |
| 4 | 16 |
| 5 | 131 |
| 6 | 257 |
| 7 | 1014 |
| 8 | 3684 |
| 9 | 10875 |
| 10 | 51142 |
| 11 | 51142 |
| 12 | 304989 |
[1,6,16,16,131,257,1014,3684,10875,51142,51142, 304989] |