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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 3 |
| 3 | 8 |
| 4 | 5 |
| 5 | 805 |
| 6 | 1689 |
| 7 | 12317 |
| 8 | 197209 |
| 9 | 520852 |
| 10 | 4493819 |
| 11 | 16769097 |
| 12 | 2053077332 |
| 13 | 1110380591 |
| 14 | 39230711849 |
| 15 | 516641987008 |
| 16 | 62653098988435 |
| 17 | 398166000236882 |
| 18 | 7896283077809532 |
| 19 | 99956735615338266 |
| 20 | 5161719458617927763 |
| 21 | 63295038588725505792 |
| 22 | 659220983938327840981 |
[0,0,3,8,5,805,1689,12317,197209,520852,4493819, 16769097,2053077332,1110380591,39230711849, 516641987008,62653098988435,398166000236882, 7896283077809532,99956735615338266, 5161719458617927763,63295038588725505792, 659220983938327840981] |