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| n | a(n) |
|---|---|
| 1 | 164 |
| 2 | 540 |
| 3 | 3964 |
| 4 | 33216 |
| 5 | 246458 |
| 6 | 2043488 |
| 7 | 16426440 |
| 8 | 143288058 |
| 9 | 1177286938 |
| 10 | 10394554300 |
| 11 | 87560804240 |
[164,540,3964,33216,246458,2043488,16426440, 143288058,1177286938,10394554300,87560804240] |