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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 | 5 |
| 3 | 17 |
| 4 | 59 |
| 5 | 214 |
| 6 | 803 |
| 7 | 3084 |
| 8 | 12035 |
| 9 | 47520 |
| 10 | 190175 |
| 11 | 767807 |
| 12 | 3121485 |
| 13 | 12777633 |
| 14 | 52607949 |
| 15 | 217615055 |
| 16 | 903971491 |
| 17 | 3770023829 |
| 18 | 15776636920 |
| 19 | 66218490239 |
| 20 | 278713126944 |
| 21 | 1176087850563 |
| 22 | 4974012901260 |
| 23 | 21080531329739 |
| 24 | 89516666392125 |
| 25 | 380805658516829 |
| 26 | 1622622248429071 |
| 27 | 6924695935436127 |
[1,2,5,17,59,214,803,3084,12035,47520,190175, 767807,3121485,12777633,52607949,217615055, 903971491,3770023829,15776636920,66218490239, 278713126944,1176087850563,4974012901260, 21080531329739,89516666392125,380805658516829, 1622622248429071,6924695935436127] |