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| n | a(n) |
|---|---|
| 1 | 280 |
| 2 | 1820 |
| 3 | 1820 |
| 4 | 11016 |
| 5 | 13588 |
| 6 | 11016 |
| 7 | 68828 |
| 8 | 101644 |
| 9 | 101644 |
| 10 | 68828 |
| 11 | 423220 |
| 12 | 820524 |
| 13 | 998048 |
| 14 | 820524 |
| 15 | 423220 |
| 16 | 2624872 |
| 17 | 6622988 |
| 18 | 10950676 |
| 19 | 10950676 |
| 20 | 6622988 |
| 21 | 2624872 |
| 22 | 16201200 |
| 23 | 54865696 |
| 24 | 122218188 |
| 25 | 170070448 |
| 26 | 122218188 |
| 27 | 54865696 |
| 28 | 16201200 |
[280,1820,1820,11016,13588,11016,68828,101644, 101644,68828,423220,820524,998048,820524,423220, 2624872,6622988,10950676,10950676,6622988,2624872, 16201200,54865696,122218188,170070448,122218188, 54865696,16201200] |