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A081125 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 120 |
| 7 | 840 |
| 8 | 1680 |
| 9 | 15120 |
| 10 | 30240 |
| 11 | 332640 |
| 12 | 665280 |
| 13 | 8648640 |
| 14 | 17297280 |
| 15 | 259459200 |
| 16 | 518918400 |
| 17 | 8821612800 |
| 18 | 17643225600 |
| 19 | 335221286400 |
| 20 | 670442572800 |
| 21 | 14079294028800 |
| 22 | 28158588057600 |
| 23 | 647647525324800 |
| 24 | 1295295050649600 |
[1,1,2,6,12,60,120,840,1680,15120,30240,332640, 665280,8648640,17297280,259459200,518918400, 8821612800,17643225600,335221286400,670442572800, 14079294028800,28158588057600,647647525324800, 1295295050649600] |