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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 | 10 |
| 3 | 62 |
| 4 | 394 |
| 5 | 2552 |
| 6 | 16822 |
| 7 | 112310 |
| 8 | 756874 |
| 9 | 5137676 |
| 10 | 35076360 |
| 11 | 240606082 |
| 12 | 1656906550 |
| 13 | 11447855850 |
| 14 | 79319081054 |
| 15 | 550925792312 |
| 16 | 3834743187594 |
| 17 | 26742188401900 |
| 18 | 186802789016908 |
| 19 | 1306827910585782 |
| 20 | 9154542088193544 |
| 21 | 64206944261628146 |
| 22 | 450823141806229290 |
[1,2,10,62,394,2552,16822,112310,756874,5137676, 35076360,240606082,1656906550,11447855850, 79319081054,550925792312,3834743187594, 26742188401900,186802789016908,1306827910585782, 9154542088193544,64206944261628146, 450823141806229290] |