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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 6 |
| 5 | 14 |
| 6 | 149 |
| 7 | 158 |
| 8 | 384 |
| 9 | 846 |
| 10 | 5065 |
| 11 | 8648 |
| 12 | 181166 |
| 13 | 196366 |
| 14 | 947545 |
| 15 | 5821349 |
| 16 | 55867168 |
| 17 | 491372910 |
| 18 | 4273496001 |
| 19 | 40534401950 |
| 20 | 87226316289 |
[1,2,5,6,14,149,158,384,846,5065,8648,181166, 196366,947545,5821349,55867168,491372910, 4273496001,40534401950,87226316289] |