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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 12 |
| 4 | 27 |
| 5 | 61 |
| 6 | 138 |
| 7 | 309 |
| 8 | 694 |
| 9 | 1560 |
| 10 | 3506 |
| 11 | 7877 |
| 12 | 17699 |
| 13 | 39770 |
| 14 | 89363 |
| 15 | 200796 |
| 16 | 451184 |
| 17 | 1013802 |
| 18 | 2277993 |
| 19 | 5118603 |
| 20 | 11501396 |
| 21 | 25843403 |
| 22 | 58069600 |
| 23 | 130481206 |
| 24 | 293188608 |
| 25 | 658788823 |
| 26 | 1480285049 |
[1,2,6,12,27,61,138,309,694,1560,3506,7877,17699, 39770,89363,200796,451184,1013802,2277993,5118603, 11501396,25843403,58069600,130481206,293188608, 658788823,1480285049] |