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| n | a(n) |
|---|---|
| 10 | 1 |
| 11 | 198 |
| 12 | 25749 |
| 13 | 2015494 |
| 14 | 121674925 |
| 15 | 6400793475 |
| 16 | 310414049312 |
| 17 | 14688518762004 |
| 18 | 693235647356851 |
| 19 | 33008431891584003 |
| 20 | 1597253179281993720 |
| 21 | 78946602364958282241 |
| 22 | 3998069693019478121036 |
| 23 | 207844726705325804349510 |
[1,198,25749,2015494,121674925,6400793475, 310414049312,14688518762004,693235647356851, 33008431891584003,1597253179281993720, 78946602364958282241,3998069693019478121036, 207844726705325804349510] |