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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 1296 |
| 3 | 64000000 |
| 4 | 576480100000000 |
| 5 | 1032774265740240721281024 |
| 6 | 387314409522870177464536579782475776 |
| 7 | 31452987943797976564466916243982925571509006106624 |
| 8 | 566574142904620264536665169363475932852029446342410000000000000000 |
[4,1296,64000000,576480100000000, 1032774265740240721281024, 387314409522870177464536579782475776, 31452987943797976564466916243982925571509006106624\ , 56657414290462026453666516936347593285202944634241\ 0000000000000000] |