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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 | 3 |
| 2 | 12 |
| 3 | 47 |
| 4 | 157 |
| 5 | 531 |
| 6 | 1741 |
| 7 | 5459 |
| 8 | 16814 |
| 9 | 51286 |
| 10 | 152506 |
| 11 | 447622 |
| 12 | 1300571 |
| 13 | 3721897 |
| 14 | 10551143 |
| 15 | 29663448 |
| 16 | 82494469 |
| 17 | 227701487 |
| 18 | 624113377 |
| 19 | 1697228926 |
| 20 | 4586879327 |
| 21 | 12323255188 |
| 22 | 32904418872 |
| 23 | 87395198231 |
| 24 | 230972180615 |
| 25 | 607363842960 |
[1,3,12,47,157,531,1741,5459,16814,51286,152506, 447622,1300571,3721897,10551143,29663448,82494469, 227701487,624113377,1697228926,4586879327, 12323255188,32904418872,87395198231,230972180615, 607363842960] |