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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 36 |
| 3 | 114 |
| 4 | 1240 |
| 5 | 5381 |
| 6 | 54588 |
| 7 | 278570 |
| 8 | 2397792 |
| 9 | 14900001 |
| 10 | 116469925 |
| 11 | 780649269 |
| 12 | 6006347346 |
| 13 | 41989064859 |
| 14 | 319129583349 |
| 15 | 2307295438172 |
| 16 | 17428815517107 |
| 17 | 128586800958736 |
| 18 | 972215152349757 |
| 19 | 7260589438120238 |
| 20 | 55045255657803475 |
[1,36,114,1240,5381,54588,278570,2397792,14900001, 116469925,780649269,6006347346,41989064859, 319129583349,2307295438172,17428815517107, 128586800958736,972215152349757,7260589438120238, 55045255657803475] |