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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 5 |
| 7 | 11 |
| 8 | 36 |
| 9 | 69 |
| 10 | 112 |
| 11 | 163 |
| 12 | 260 |
| 13 | 425 |
| 14 | 897 |
| 15 | 1845 |
| 16 | 3910 |
| 17 | 7524 |
| 18 | 13683 |
| 19 | 23675 |
| 20 | 41741 |
| 21 | 74882 |
| 22 | 141758 |
| 23 | 272059 |
| 24 | 525251 |
| 25 | 992342 |
| 26 | 1841482 |
| 27 | 3361173 |
| 28 | 6142594 |
| 29 | 11291891 |
| 30 | 21037446 |
| 31 | 39459473 |
| 32 | 74198937 |
| 33 | 138852912 |
| 34 | 258417206 |
| 35 | 478462336 |
| 36 | 885161178 |
| 37 | 1640011925 |
[1,1,1,1,1,1,5,11,36,69,112,163,260,425,897,1845, 3910,7524,13683,23675,41741,74882,141758,272059, 525251,992342,1841482,3361173,6142594,11291891, 21037446,39459473,74198937,138852912,258417206, 478462336,885161178,1640011925] |