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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 20 |
| 6 | 2 |
| 7 | 4 |
| 8 | 208 |
| 9 | 208 |
| 10 | 4 |
| 11 | 8 |
| 12 | 2056 |
| 13 | 7551 |
| 14 | 2056 |
| 15 | 8 |
| 16 | 16 |
| 17 | 20483 |
| 18 | 291080 |
| 19 | 291080 |
| 20 | 20483 |
| 21 | 16 |
| 22 | 32 |
| 23 | 203905 |
| 24 | 11115933 |
| 25 | 43253705 |
| 26 | 11115933 |
| 27 | 203905 |
| 28 | 32 |
| 29 | 64 |
| 30 | 2029453 |
| 31 | 424939090 |
| 32 | 6388528170 |
| 33 | 6388528170 |
| 34 | 424939090 |
| 35 | 2029453 |
| 36 | 64 |
| 37 | 128 |
| 38 | 20199560 |
[0,1,1,2,20,2,4,208,208,4,8,2056,7551,2056,8,16, 20483,291080,291080,20483,16,32,203905,11115933, 43253705,11115933,203905,32,64,2029453,424939090, 6388528170,6388528170,424939090,2029453,64,128, 20199560] |