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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 9 |
| 6 | 36 |
| 7 | 85 |
| 8 | 176 |
| 9 | 194 |
| 10 | 200 |
| 11 | 375 |
| 12 | 1517 |
| 13 | 1523 |
| 14 | 3042 |
| 15 | 5953 |
| 16 | 6043 |
| 17 | 6109 |
| 18 | 12068 |
| 19 | 12104 |
| 20 | 96251 |
| 21 | 193734 |
| 22 | 386797 |
| 23 | 387589 |
| 24 | 1545477 |
| 25 | 3092224 |
| 26 | 3098800 |
| 27 | 6188717 |
| 28 | 6191693 |
| 29 | 6199469 |
| 30 | 24753865 |
| 31 | 99084345 |
[0,1,2,3,9,36,85,176,194,200,375,1517,1523,3042, 5953,6043,6109,12068,12104,96251,193734,386797, 387589,1545477,3092224,3098800,6188717,6191693, 6199469,24753865,99084345] |