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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 16 |
| 4 | 864 |
| 5 | 1150976 |
| 6 | 899934060544 |
| 7 | 291136684662192699604992 |
| 8 | 14704020783497694096990514485197495566069661696 |
| 9 | 12553242487939982849962414795232892198542733625222671042878037323112413463887484853594095616 |
[1,1,2,16,864,1150976,899934060544, 291136684662192699604992, 14704020783497694096990514485197495566069661696, 12553242487939982849962414795232892198542733625222\ 671042878037323112413463887484853594095616] |