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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 57 |
| 3 | 57 |
| 4 | 414 |
| 5 | 937 |
| 6 | 414 |
| 7 | 2942 |
| 8 | 18334 |
| 9 | 18334 |
| 10 | 2942 |
| 11 | 20996 |
| 12 | 352610 |
| 13 | 1044214 |
| 14 | 352610 |
| 15 | 20996 |
| 16 | 150012 |
| 17 | 6781436 |
| 18 | 57491294 |
| 19 | 57491294 |
| 20 | 6781436 |
| 21 | 150012 |
| 22 | 1071848 |
| 23 | 130633288 |
| 24 | 3176514169 |
| 25 | 9008532031 |
| 26 | 3176514169 |
| 27 | 130633288 |
| 28 | 1071848 |
| 29 | 7659800 |
| 30 | 2516212586 |
[9,57,57,414,937,414,2942,18334,18334,2942,20996, 352610,1044214,352610,20996,150012,6781436, 57491294,57491294,6781436,150012,1071848, 130633288,3176514169,9008532031,3176514169, 130633288,1071848,7659800,2516212586] |