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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 6 |
| 3 | 10 |
| 4 | 32 |
| 5 | 62 |
| 6 | 210 |
| 7 | 436 |
| 8 | 1540 |
| 9 | 3346 |
| 10 | 12192 |
| 11 | 27344 |
| 12 | 102054 |
| 13 | 234388 |
| 14 | 891574 |
| 15 | 2085940 |
| 16 | 8057844 |
| 17 | 19134786 |
| 18 | 74864648 |
| 19 | 179968564 |
| 20 | 711708544 |
[2,2,6,10,32,62,210,436,1540,3346,12192,27344, 102054,234388,891574,2085940,8057844,19134786, 74864648,179968564,711708544] |