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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 | 3 |
| 6 | 8 |
| 7 | 27 |
| 8 | 89 |
| 9 | 350 |
| 10 | 1943 |
| 11 | 13578 |
| 12 | 114816 |
| 13 | 1134812 |
| 14 | 13374912 |
| 15 | 197153652 |
| 16 | 3619365346 |
| 17 | 81478825413 |
| 18 | 2227027591689 |
| 19 | 73860566227987 |
| 20 | 3001388762491543 |
| 21 | 149854380038852307 |
| 22 | 9172310473214513455 |
| 23 | 686434022927867658469 |
[1,1,1,1,3,8,27,89,350,1943,13578,114816,1134812, 13374912,197153652,3619365346,81478825413, 2227027591689,73860566227987,3001388762491543, 149854380038852307,9172310473214513455, 686434022927867658469] |