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| n | a(n) |
|---|---|
| 1 | 225 |
| 2 | 873 |
| 3 | 3081 |
| 4 | 10233 |
| 5 | 32745 |
| 6 | 102393 |
| 7 | 315561 |
| 8 | 963513 |
| 9 | 2924265 |
| 10 | 8840313 |
| 11 | 26656041 |
| 12 | 80238393 |
| 13 | 241255785 |
| 14 | 724848633 |
| 15 | 2176708521 |
| 16 | 6534450873 |
| 17 | 19612003305 |
| 18 | 58853311353 |
| 19 | 176594537001 |
| 20 | 529852816953 |
| 21 | 1589696862825 |
| 22 | 4769367412473 |
[225,873,3081,10233,32745,102393,315561,963513, 2924265,8840313,26656041,80238393,241255785, 724848633,2176708521,6534450873,19612003305, 58853311353,176594537001,529852816953, 1589696862825,4769367412473] |