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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 18 |
| 6 | 28 |
| 7 | 84 |
| 8 | 336 |
| 9 | 1456 |
| 10 | 210 |
| 11 | 840 |
| 12 | 6300 |
| 13 | 88200 |
| 14 | 1874250 |
| 15 | 2604 |
| 16 | 13020 |
| 17 | 156240 |
| 18 | 4843440 |
| 19 | 377788320 |
| 20 | 59010535584 |
| 21 | 54684 |
| 22 | 328104 |
| 23 | 5741820 |
| 24 | 329197680 |
| 25 | 63946649340 |
| 26 | 39774815889480 |
| 27 | 61856467844122980 |
| 28 | 1984248 |
| 29 | 13889736 |
[1,2,2,6,12,18,28,84,336,1456,210,840,6300,88200, 1874250,2604,13020,156240,4843440,377788320, 59010535584,54684,328104,5741820,329197680, 63946649340,39774815889480,61856467844122980, 1984248,13889736] |