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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 70 |
| 5 | 6174 |
| 6 | 45785878 |
| 7 | 9941815425565254 |
| 8 | 90769288470114014438337290256582 |
| 9 | 35712953028973795679646888004332118441804994642382862330509857037 |
[1,2,4,70,6174,45785878,9941815425565254, 90769288470114014438337290256582, 35712953028973795679646888004332118441804994642382\ 862330509857037] |