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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 | 2 |
| 4 | 3 |
| 5 | 8 |
| 6 | 18 |
| 7 | 58 |
| 8 | 155 |
| 9 | 546 |
| 10 | 1592 |
| 11 | 5774 |
| 12 | 17798 |
| 13 | 65676 |
| 14 | 210362 |
| 15 | 785248 |
| 16 | 2588155 |
| 17 | 9743348 |
| 18 | 32832290 |
| 19 | 124416022 |
| 20 | 426685544 |
| 21 | 1625465732 |
| 22 | 5654938190 |
| 23 | 21636274202 |
| 24 | 76171463926 |
| 25 | 292498386900 |
| 26 | 1040120036300 |
| 27 | 4006388161846 |
| 28 | 14369121494126 |
[1,1,2,3,8,18,58,155,546,1592,5774,17798,65676, 210362,785248,2588155,9743348,32832290,124416022, 426685544,1625465732,5654938190,21636274202, 76171463926,292498386900,1040120036300, 4006388161846,14369121494126] |