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| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 2 |
| 4 | 1 |
| 5 | 6 |
| 6 | 16 |
| 7 | 4 |
| 8 | 5 |
| 9 | 25 |
| 10 | 18 |
| 11 | 20 |
| 12 | 45 |
| 13 | 61 |
| 14 | 91 |
| 15 | 939 |
| 16 | 817 |
| 17 | 336 |
| 18 | 862 |
| 19 | 2533 |
| 20 | 3404 |
| 21 | 2822 |
| 22 | 3136 |
| 23 | 1554 |
| 24 | 9371 |
| 25 | 10712 |
| 26 | 21311 |
| 27 | 44296 |
| 28 | 68185 |
| 29 | 66909 |
| 30 | 31147 |
| 31 | 25648 |
[2,2,1,6,16,4,5,25,18,20,45,61,91,939,817,336,862, 2533,3404,2822,3136,1554,9371,10712,21311,44296, 68185,66909,31147,25648] |