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| n | a(n) |
|---|---|
| 1 | 27 |
| 2 | 39 |
| 3 | 105 |
| 4 | 279 |
| 5 | 629 |
| 6 | 597 |
| 7 | 1661 |
| 8 | 1875 |
| 9 | 3777 |
| 10 | 13961 |
| 11 | 15491 |
| 12 | 33585 |
| 13 | 87401 |
| 14 | 11445 |
| 15 | 28877 |
| 16 | 113451 |
| 17 | 265115 |
| 18 | 146189 |
| 19 | 584705 |
| 20 | 668525 |
| 21 | 1370667 |
| 22 | 1582581 |
| 23 | 1471865 |
| 24 | 2193351 |
| 25 | 2932901 |
| 26 | 3832635 |
| 27 | 3571617 |
| 28 | 3617721 |
| 29 | 15131459 |
| 30 | 31245831 |
| 31 | 11442269 |
[27,39,105,279,629,597,1661,1875,3777,13961,15491, 33585,87401,11445,28877,113451,265115,146189, 584705,668525,1370667,1582581,1471865,2193351, 2932901,3832635,3571617,3617721,15131459,31245831, 11442269] |