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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 8 |
| 4 | 8 |
| 5 | 8 |
| 6 | 8 |
| 7 | 32 |
| 8 | 128 |
| 9 | 288 |
| 10 | 648 |
| 11 | 1800 |
| 12 | 5000 |
| 13 | 12800 |
| 14 | 32768 |
| 15 | 86528 |
| 16 | 228488 |
| 17 | 596232 |
| 18 | 1555848 |
| 19 | 4078368 |
| 20 | 10690688 |
| 21 | 27975200 |
| 22 | 73205000 |
| 23 | 191688200 |
| 24 | 501937928 |
| 25 | 1313998848 |
| 26 | 3439853568 |
| 27 | 9005893632 |
| 28 | 23578364168 |
| 29 | 61728330248 |
| 30 | 161605221128 |
[2,8,8,8,8,8,32,128,288,648,1800,5000,12800,32768, 86528,228488,596232,1555848,4078368,10690688, 27975200,73205000,191688200,501937928,1313998848, 3439853568,9005893632,23578364168,61728330248, 161605221128] |