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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 9 |
| 2 | 378 |
| 3 | 11389 |
| 4 | 1251967 |
| 5 | 46464143 |
| 6 | 2363588163 |
| 7 | 92615568742 |
| 8 | 287369842623 |
| 9 | 112076323050317 |
| 10 | 2403749863808044 |
| 11 | 56094387104417648 |
| 12 | 1156752450536914530 |
| 13 | 43970228150195457632 |
| 14 | 10132163897314954464899 |
| 15 | 503212117431217218892992 |
| 16 | 19164391897329672149556204 |
[0,9,378,11389,1251967,46464143,2363588163, 92615568742,287369842623,112076323050317, 2403749863808044,56094387104417648, 1156752450536914530,43970228150195457632, 10132163897314954464899,503212117431217218892992, 19164391897329672149556204] |