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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 2 |
| 6 | 7 |
| 7 | 7 |
| 8 | 16 |
| 9 | 19 |
| 10 | 43 |
| 11 | 58 |
| 12 | 121 |
| 13 | 182 |
| 14 | 357 |
| 15 | 603 |
| 16 | 1161 |
| 17 | 2036 |
| 18 | 3913 |
| 19 | 7131 |
| 20 | 13639 |
| 21 | 25438 |
| 22 | 48733 |
| 23 | 92135 |
| 24 | 176902 |
| 25 | 337472 |
| 26 | 649514 |
| 27 | 1246672 |
| 28 | 2405235 |
| 29 | 4636007 |
| 30 | 8964799 |
| 31 | 17334189 |
| 32 | 33588189 |
| 33 | 65106900 |
| 34 | 126390021 |
| 35 | 245490129 |
| 36 | 477353375 |
[1,0,1,1,3,2,7,7,16,19,43,58,121,182,357,603,1161, 2036,3913,7131,13639,25438,48733,92135,176902, 337472,649514,1246672,2405235,4636007,8964799, 17334189,33588189,65106900,126390021,245490129, 477353375] |