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| n | a(n) |
|---|---|
| 1 | 512 |
| 2 | 9611 |
| 3 | 104692 |
| 4 | 641575 |
| 5 | 2582556 |
| 6 | 8083791 |
| 7 | 21652632 |
| 8 | 50642325 |
| 9 | 108467436 |
| 10 | 211190505 |
| 11 | 385683376 |
| 12 | 663206263 |
| 13 | 1089800384 |
| 14 | 1712571513 |
| 15 | 2604321792 |
| 16 | 3841714375 |
| 17 | 5527027352 |
| 18 | 7758624247 |
| 19 | 10684401316 |
| 20 | 14461199221 |
| 21 | 19256940728 |
[512,9611,104692,641575,2582556,8083791,21652632, 50642325,108467436,211190505,385683376,663206263, 1089800384,1712571513,2604321792,3841714375, 5527027352,7758624247,10684401316,14461199221, 19256940728] |