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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 | 2 |
| 5 | 3 |
| 6 | 5 |
| 7 | 18 |
| 8 | 325 |
| 9 | 1512 |
| 10 | 14365 |
| 11 | 349272 |
| 12 | 21734245 |
| 13 | 276623424 |
| 14 | 6933892901 |
| 15 | 577589709312 |
| 16 | 492757099009565 |
| 17 | 16532350249637376 |
| 18 | 1086038875887212525 |
| 19 | 1240124656925798848512 |
| 20 | 1450308695702968720107785 |
[1,1,1,2,3,5,18,325,1512,14365,349272,21734245, 276623424,6933892901,577589709312,492757099009565, 16532350249637376,1086038875887212525, 1240124656925798848512,1450308695702968720107785] |