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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 1 |
| 7 | 21 |
| 8 | 9 |
| 9 | 145 |
| 10 | 29 |
| 11 | 1925 |
| 12 | 153 |
| 13 | 28297 |
| 14 | 2069 |
| 15 | 734141 |
| 16 | 42313 |
| 17 | 33360929 |
| 18 | 973281 |
| 19 | 2205341673 |
| 20 | 38746505 |
| 21 | 212529048997 |
| 22 | 2736250609 |
| 23 | 33748456381053 |
| 24 | 283141781389 |
| 25 | 8526059147670681 |
| 26 | 43072398238613 |
| 27 | 3258206098233834291 |
[1,1,1,1,5,1,21,9,145,29,1925,153,28297,2069, 734141,42313,33360929,973281,2205341673,38746505, 212529048997,2736250609,33748456381053, 283141781389,8526059147670681,43072398238613, 3258206098233834291] |