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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 | 2 |
| 3 | 4 |
| 4 | 11 |
| 5 | 31 |
| 6 | 102 |
| 7 | 340 |
| 8 | 1203 |
| 9 | 4344 |
| 10 | 16173 |
| 11 | 61520 |
| 12 | 238575 |
| 13 | 940236 |
| 14 | 3756059 |
| 15 | 15180801 |
| 16 | 62001672 |
| 17 | 255519383 |
| 18 | 1061764788 |
| 19 | 4443897040 |
| 20 | 18722145717 |
| 21 | 79344717504 |
| 22 | 338078438238 |
| 23 | 1447629138256 |
| 24 | 6226612449561 |
| 25 | 26893592839179 |
| 26 | 116602739854967 |
| 27 | 507350856424816 |
| 28 | 2214826529968892 |
| 29 | 9698461780045479 |
[1,1,2,4,11,31,102,340,1203,4344,16173,61520, 238575,940236,3756059,15180801,62001672,255519383, 1061764788,4443897040,18722145717,79344717504, 338078438238,1447629138256,6226612449561, 26893592839179,116602739854967,507350856424816, 2214826529968892,9698461780045479] |