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| n | a(n) |
|---|---|
| 1 | 36 |
| 2 | 1009 |
| 3 | 12384 |
| 4 | 82278 |
| 5 | 746992 |
| 6 | 5401404 |
| 7 | 15685704 |
| 8 | 26936064 |
| 9 | 137763072 |
| 10 | 251066304 |
| 11 | 857520000 |
| 12 | 618817536 |
| 13 | 3032856000 |
| 14 | 2050677000 |
| 15 | 6100691904 |
| 16 | 36013192704 |
| 17 | 16405416000 |
| 18 | 96569712000 |
| 19 | 48805535232 |
| 20 | 131243328000 |
| 21 | 611996202000 |
| 22 | 201153672000 |
[36,1009,12384,82278,746992,5401404,15685704, 26936064,137763072,251066304,857520000,618817536, 3032856000,2050677000,6100691904,36013192704, 16405416000,96569712000,48805535232,131243328000, 611996202000,201153672000] |