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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 4 |
| 6 | 12 |
| 7 | 24 |
| 8 | 36 |
| 9 | 216 |
| 10 | 1296 |
| 11 | 62208 |
| 12 | 746496 |
| 13 | 107495424 |
| 14 | 46438023168 |
| 15 | 240734712102912 |
| 16 | 8423789045905096704 |
| 17 | 5589622068988418728132608 |
| 18 | 133524176512370516060034538930176 |
| 19 | 581306137722148449693374999786222908342272 |
[1,1,2,2,4,12,24,36,216,1296,62208,746496, 107495424,46438023168,240734712102912, 8423789045905096704,5589622068988418728132608, 133524176512370516060034538930176, 581306137722148449693374999786222908342272] |