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| n | a(n) |
|---|---|
| 1 | 63 |
| 2 | 705 |
| 3 | 3647 |
| 4 | 12609 |
| 5 | 34111 |
| 6 | 78273 |
| 7 | 159615 |
| 8 | 297857 |
| 9 | 518719 |
| 10 | 854721 |
| 11 | 1345983 |
| 12 | 2041025 |
| 13 | 2997567 |
| 14 | 4283329 |
| 15 | 5976831 |
| 16 | 8168193 |
| 17 | 10959935 |
| 18 | 14467777 |
| 19 | 18821439 |
| 20 | 24165441 |
| 21 | 30659903 |
| 22 | 38481345 |
| 23 | 47823487 |
| 24 | 58898049 |
| 25 | 71935551 |
| 26 | 87186113 |
[63,705,3647,12609,34111,78273,159615,297857, 518719,854721,1345983,2041025,2997567,4283329, 5976831,8168193,10959935,14467777,18821439, 24165441,30659903,38481345,47823487,58898049, 71935551,87186113] |