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| n | a(n) |
|---|---|
| 1 | 27 |
| 2 | 216 |
| 3 | 788 |
| 4 | 2321 |
| 5 | 5840 |
| 6 | 13052 |
| 7 | 26610 |
| 8 | 50423 |
| 9 | 90012 |
| 10 | 152912 |
| 11 | 249120 |
| 12 | 391589 |
| 13 | 596768 |
| 14 | 885188 |
| 15 | 1282094 |
| 16 | 1818123 |
| 17 | 2530028 |
| 18 | 3461448 |
| 19 | 4663724 |
| 20 | 6196761 |
| 21 | 8129936 |
| 22 | 10543052 |
| 23 | 13527338 |
| 24 | 17186495 |
| 25 | 21637788 |
| 26 | 27013184 |
| 27 | 33460536 |
| 28 | 41144813 |
| 29 | 50249376 |
[27,216,788,2321,5840,13052,26610,50423,90012, 152912,249120,391589,596768,885188,1282094, 1818123,2530028,3461448,4663724,6196761,8129936, 10543052,13527338,17186495,21637788,27013184, 33460536,41144813,50249376] |