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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 | 7 |
| 3 | 22 |
| 4 | 81 |
| 5 | 281 |
| 6 | 1058 |
| 7 | 3830 |
| 8 | 14605 |
| 9 | 54127 |
| 10 | 208110 |
| 11 | 782761 |
| 12 | 3027038 |
| 13 | 11501478 |
| 14 | 44668692 |
| 15 | 170974710 |
| 16 | 666220005 |
| 17 | 2564271875 |
| 18 | 10018268150 |
| 19 | 38728479647 |
| 20 | 151631858378 |
| 21 | 588229029258 |
| 22 | 2307174835212 |
| 23 | 8975958379817 |
| 24 | 35258881445606 |
| 25 | 137501193282026 |
| 26 | 540821096592028 |
[1,2,7,22,81,281,1058,3830,14605,54127,208110, 782761,3027038,11501478,44668692,170974710, 666220005,2564271875,10018268150,38728479647, 151631858378,588229029258,2307174835212, 8975958379817,35258881445606,137501193282026, 540821096592028] |