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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 36 |
| 2 | 1260 |
| 3 | 44100 |
| 4 | 1543500 |
| 5 | 54022500 |
| 6 | 1890787500 |
| 7 | 66177562500 |
| 8 | 2316214687500 |
| 9 | 81067514062500 |
| 10 | 2837362992186870 |
| 11 | 99307704726518400 |
| 12 | 3475769665427372880 |
| 13 | 121651938289931061600 |
| 14 | 4257817840146642534000 |
| 15 | 149023624405099426920000 |
[1,36,1260,44100,1543500,54022500,1890787500, 66177562500,2316214687500,81067514062500, 2837362992186870,99307704726518400, 3475769665427372880,121651938289931061600, 4257817840146642534000,149023624405099426920000] |