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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 1 |
| 3 | 8 |
| 4 | 6 |
| 5 | 31 |
| 6 | 31 |
| 7 | 122 |
| 8 | 149 |
| 9 | 488 |
| 10 | 687 |
| 11 | 1979 |
| 12 | 3087 |
| 13 | 8115 |
| 14 | 13640 |
| 15 | 33568 |
| 16 | 59588 |
| 17 | 139797 |
| 18 | 258280 |
| 19 | 585208 |
| 20 | 1113329 |
| 21 | 2459315 |
| 22 | 4780244 |
| 23 | 10365381 |
| 24 | 20466962 |
| 25 | 43782453 |
| 26 | 87452985 |
| 27 | 185231393 |
| 28 | 373127431 |
| 29 | 784596104 |
| 30 | 1590288132 |
| 31 | 3326280454 |
| 32 | 6772621201 |
| 33 | 14110813844 |
| 34 | 28826477126 |
| 35 | 59889596123 |
[0,2,1,8,6,31,31,122,149,488,687,1979,3087,8115, 13640,33568,59588,139797,258280,585208,1113329, 2459315,4780244,10365381,20466962,43782453, 87452985,185231393,373127431,784596104,1590288132, 3326280454,6772621201,14110813844,28826477126, 59889596123] |