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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 27 |
| 4 | 96 |
| 5 | 598 |
| 6 | 1419 |
| 7 | 2682 |
| 8 | 6560 |
| 9 | 16054 |
| 10 | 17966 |
| 11 | 32778 |
| 12 | 35104 |
| 13 | 35982 |
| 14 | 340895 |
| 15 | 1069542 |
| 16 | 1589663 |
| 17 | 3586844 |
| 18 | 5835192 |
| 19 | 139139888 |
| 20 | 251306318 |
| 21 | 285074690 |
| 22 | 327023207 |
| 23 | 751411952 |
| 24 | 981270903 |
| 25 | 2655397632 |
| 26 | 5238280947 |
| 27 | 6498130362 |
| 28 | 8512915574 |
[1,16,27,96,598,1419,2682,6560,16054,17966,32778, 35104,35982,340895,1069542,1589663,3586844, 5835192,139139888,251306318,285074690,327023207, 751411952,981270903,2655397632,5238280947, 6498130362,8512915574] |