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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 25 |
| 3 | 625 |
| 4 | 12890625 |
| 5 | 6259918212890625 |
| 6 | 4106619977392256259918212890625 |
| 7 | 80863811000557423423230896109004106619977392256259918212890625 |
[5,25,625,12890625,6259918212890625, 4106619977392256259918212890625, 80863811000557423423230896109004106619977392256259\ 918212890625] |