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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 7 |
| 5 | 10 |
| 6 | 28 |
| 7 | 21 |
| 8 | 125 |
| 9 | 117 |
| 10 | 686 |
| 11 | 55 |
| 12 | 9049 |
| 13 | 78 |
| 14 | 21596 |
| 15 | 206310 |
| 16 | 508025 |
| 17 | 136 |
| 18 | 8701561 |
| 19 | 171 |
| 20 | 229315221 |
| 21 | 303797886 |
| 22 | 14418152 |
| 23 | 253 |
| 24 | 88452515089 |
| 25 | 305175781550 |
| 26 | 327156038 |
| 27 | 377734977126 |
| 28 | 27160609347425 |
| 29 | 406 |
| 30 | 2458857416866336 |
| 31 | 465 |
| 32 | 9570181420417521 |
[0,1,3,7,10,28,21,125,117,686,55,9049,78,21596, 206310,508025,136,8701561,171,229315221,303797886, 14418152,253,88452515089,305175781550,327156038, 377734977126,27160609347425,406,2458857416866336, 465,9570181420417521] |