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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 | 1 |
| 2 | 5 |
| 3 | 13 |
| 4 | 53 |
| 5 | 181 |
| 6 | 725 |
| 7 | 2697 |
| 8 | 10941 |
| 9 | 42517 |
| 10 | 174389 |
| 11 | 695889 |
| 12 | 2881173 |
| 13 | 11700657 |
| 14 | 48814821 |
| 15 | 200768841 |
| 16 | 842776029 |
| 17 | 3499647877 |
| 18 | 14765342669 |
| 19 | 61776415577 |
| 20 | 261750354349 |
| 21 | 1101787105625 |
| 22 | 4685241806701 |
| 23 | 19820133247569 |
| 24 | 84546287237733 |
| 25 | 359153592324865 |
| 26 | 1536204629403341 |
| 27 | 6548964621128401 |
[1,1,5,13,53,181,725,2697,10941,42517,174389, 695889,2881173,11700657,48814821,200768841, 842776029,3499647877,14765342669,61776415577, 261750354349,1101787105625,4685241806701, 19820133247569,84546287237733,359153592324865, 1536204629403341,6548964621128401] |