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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 23674 |
| 3 | 1432402 |
| 4 | 24220966 |
| 5 | 210222830 |
| 6 | 1206988576 |
| 7 | 5230842688 |
| 8 | 18491305412 |
| 9 | 56022717236 |
| 10 | 150412523630 |
| 11 | 366439267062 |
| 12 | 824236891962 |
| 13 | 1734285496242 |
| 14 | 3448292160196 |
| 15 | 6530868950100 |
| 16 | 11857838629608 |
| 17 | 20748002017096 |
[0,23674,1432402,24220966,210222830,1206988576, 5230842688,18491305412,56022717236,150412523630, 366439267062,824236891962,1734285496242, 3448292160196,6530868950100,11857838629608, 20748002017096] |