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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 5 |
| 3 | 64 |
| 4 | 691 |
| 5 | 7011 |
| 6 | 70030 |
| 7 | 699597 |
| 8 | 7005450 |
| 9 | 70048740 |
| 10 | 700321813 |
| 11 | 7003128054 |
| 12 | 70034216605 |
| 13 | 700350142296 |
| 14 | 7003426996800 |
| 15 | 70033987968599 |
| 16 | 700341098675985 |
| 17 | 7003416399263312 |
[0,5,64,691,7011,70030,699597,7005450,70048740, 700321813,7003128054,70034216605,700350142296, 7003426996800,70033987968599,700341098675985, 7003416399263312] |