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| n | a(n) |
|---|---|
| 1 | 113 |
| 2 | 480 |
| 3 | 1632 |
| 4 | 4737 |
| 5 | 12470 |
| 6 | 30335 |
| 7 | 69612 |
| 8 | 152260 |
| 9 | 320546 |
| 10 | 653622 |
| 11 | 1298042 |
| 12 | 2520746 |
| 13 | 4803363 |
| 14 | 9005619 |
| 15 | 16650695 |
| 16 | 30417076 |
| 17 | 54987344 |
| 18 | 98502681 |
| 19 | 175052609 |
| 20 | 308918598 |
| 21 | 541794370 |
| 22 | 945035051 |
| 23 | 1640400129 |
| 24 | 2835103075 |
| 25 | 4880936409 |
[113,480,1632,4737,12470,30335,69612,152260, 320546,653622,1298042,2520746,4803363,9005619, 16650695,30417076,54987344,98502681,175052609, 308918598,541794370,945035051,1640400129, 2835103075,4880936409] |