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| n | a(n) |
|---|---|
| 0 | 27 |
| 1 | 351 |
| 2 | 2925 |
| 3 | 17550 |
| 4 | 80730 |
| 5 | 296010 |
| 6 | 888030 |
| 7 | 2220075 |
| 8 | 4686825 |
| 9 | 8335899 |
| 10 | 12184614 |
| 11 | 14074164 |
| 12 | 1230120 |
| 13 | 7757100 |
| 14 | 3309696 |
| 15 | 853281 |
| 16 | 100386 |
[27,351,2925,17550,80730,296010,888030,2220075, 4686825,8335899,12184614,14074164,1230120,7757100, 3309696,853281,100386] |