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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 | 3 |
| 2 | 15 |
| 3 | 21 |
| 4 | 315 |
| 5 | 3465 |
| 6 | 45045 |
| 7 | 15015 |
| 8 | 765765 |
| 9 | 14549535 |
| 10 | 14549535 |
| 11 | 25741485 |
| 12 | 1673196525 |
| 13 | 1003917915 |
| 14 | 145568097675 |
| 15 | 265447707525 |
| 16 | 1504203675975 |
| 17 | 4512611027925 |
| 18 | 166966608033225 |
| 19 | 33393321606645 |
| 20 | 1369126185872445 |
| 21 | 58872425992515135 |
| 22 | 294362129962575675 |
[1,3,15,21,315,3465,45045,15015,765765,14549535, 14549535,25741485,1673196525,1003917915, 145568097675,265447707525,1504203675975, 4512611027925,166966608033225,33393321606645, 1369126185872445,58872425992515135, 294362129962575675] |