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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 7 |
| 4 | 1 |
| 5 | 7 |
| 6 | 17 |
| 7 | 119 |
| 8 | 193 |
| 9 | 327 |
| 10 | 753 |
| 11 | 1175 |
| 12 | 2081 |
| 13 | 6375 |
| 14 | 3665 |
| 15 | 9271 |
| 16 | 32129 |
| 17 | 28295 |
| 18 | 66993 |
| 19 | 206807 |
| 20 | 923361 |
| 21 | 1220647 |
| 22 | 2253073 |
| 23 | 7382903 |
| 24 | 9737281 |
| 25 | 1052103 |
| 26 | 40919153 |
| 27 | 17998615 |
| 28 | 125990305 |
| 29 | 345061223 |
| 30 | 804815825 |
| 31 | 265001655 |
| 32 | 1855011585 |
| 33 | 4395146503 |
| 34 | 4996221745 |
[0,1,1,7,1,7,17,119,193,327,753,1175,2081,6375, 3665,9271,32129,28295,66993,206807,923361,1220647, 2253073,7382903,9737281,1052103,40919153,17998615, 125990305,345061223,804815825,265001655, 1855011585,4395146503,4996221745] |