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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 10 |
| 3 | 165 |
| 4 | 218673 |
| 5 | 75510967206 |
| 6 | 14666670996451472494064 |
| 7 | 318033435047744040119174255756277946082958110 |
| 8 | 222562499295932133989982996162129528076446080094832884826693648678455802606574139206041317 |
[3,10,165,218673,75510967206, 14666670996451472494064, 318033435047744040119174255756277946082958110, 22256249929593213398998299616212952807644608009483\ 2884826693648678455802606574139206041317] |