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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1601292 |
| 8 | 314949564 |
| 9 | 17143061738 |
| 10 | 423677826986 |
| 11 | 6210264633994 |
| 12 | 62831788827614 |
| 13 | 481992723228798 |
| 14 | 2982908737810114 |
| 15 | 15548436178142582 |
| 16 | 70420082692285198 |
| 17 | 283631426534134042 |
| 18 | 1034163399690010346 |
| 19 | 3461457325296584554 |
| 20 | 10754832937513676198 |
[0,0,0,0,0,0,1601292,314949564,17143061738, 423677826986,6210264633994,62831788827614, 481992723228798,2982908737810114, 15548436178142582,70420082692285198, 283631426534134042,1034163399690010346, 3461457325296584554,10754832937513676198] |