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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 2 |
| 4 | 11 |
| 5 | 6 |
| 6 | 29 |
| 7 | 17 |
| 8 | 76 |
| 9 | 46 |
| 10 | 199 |
| 11 | 122 |
| 12 | 521 |
| 13 | 321 |
| 14 | 1364 |
| 15 | 842 |
| 16 | 3571 |
| 17 | 2206 |
| 18 | 9349 |
| 19 | 5777 |
| 20 | 24476 |
| 21 | 15126 |
| 22 | 64079 |
| 23 | 39602 |
| 24 | 167761 |
| 25 | 103681 |
| 26 | 439204 |
| 27 | 271442 |
| 28 | 1149851 |
| 29 | 710646 |
| 30 | 3010349 |
| 31 | 1860497 |
| 32 | 7881196 |
| 33 | 4870846 |
| 34 | 20633239 |
| 35 | 12752042 |
[1,1,4,2,11,6,29,17,76,46,199,122,521,321,1364, 842,3571,2206,9349,5777,24476,15126,64079,39602, 167761,103681,439204,271442,1149851,710646, 3010349,1860497,7881196,4870846,20633239,12752042] |