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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 9 |
| 5 | 9 |
| 6 | 41 |
| 7 | 105 |
| 8 | 233 |
| 9 | 233 |
| 10 | 745 |
| 11 | 1769 |
| 12 | 1769 |
| 13 | 1769 |
| 14 | 9961 |
| 15 | 9961 |
| 16 | 9961 |
| 17 | 75497 |
| 18 | 206569 |
| 19 | 206569 |
| 20 | 206569 |
| 21 | 1255145 |
| 22 | 1255145 |
| 23 | 5449449 |
| 24 | 13838057 |
| 25 | 30615273 |
| 26 | 64169705 |
| 27 | 64169705 |
| 28 | 64169705 |
| 29 | 332605161 |
| 30 | 869476073 |
| 31 | 869476073 |
| 32 | 869476073 |
| 33 | 5164443369 |
| 34 | 13754377961 |
| 35 | 13754377961 |
[1,1,9,9,41,105,233,233,745,1769,1769,1769,9961, 9961,9961,75497,206569,206569,206569,1255145, 1255145,5449449,13838057,30615273,64169705, 64169705,64169705,332605161,869476073,869476073, 869476073,5164443369,13754377961,13754377961] |