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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 | 3 |
| 3 | 5 |
| 4 | 18 |
| 5 | 124 |
| 6 | 889 |
| 7 | 9624 |
| 8 | 117592 |
| 9 | 3086899 |
| 10 | 71342470 |
| 11 | 3940302454 |
| 12 | 162484045629 |
| 13 | 19765145478158 |
| 14 | 1482360209667114 |
| 15 | 393627814809408705 |
| 16 | 53489489176352337875 |
| 17 | 30927278141339388397696 |
| 18 | 7617052120730650394236371 |
[1,3,5,18,124,889,9624,117592,3086899,71342470, 3940302454,162484045629,19765145478158, 1482360209667114,393627814809408705, 53489489176352337875,30927278141339388397696, 7617052120730650394236371] |