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| n | a(n) |
|---|---|
| 1 | 243 |
| 2 | 7776 |
| 3 | 62764 |
| 4 | 297859 |
| 5 | 1108969 |
| 6 | 3516324 |
| 7 | 9866389 |
| 8 | 25128396 |
| 9 | 59129041 |
| 10 | 130220738 |
| 11 | 271055417 |
| 12 | 537353315 |
| 13 | 1020817107 |
| 14 | 1867650094 |
| 15 | 3304497043 |
| 16 | 5674041696 |
| 17 | 9482969967 |
| 18 | 15465546464 |
| 19 | 24666658243 |
| 20 | 38548857659 |
| 21 | 59128689861 |
[243,7776,62764,297859,1108969,3516324,9866389, 25128396,59129041,130220738,271055417,537353315, 1020817107,1867650094,3304497043,5674041696, 9482969967,15465546464,24666658243,38548857659, 59128689861] |