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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 2052 |
| 4 | 455546040 |
| 5 | 103204230192540988 |
| 6 | 47890666906311937749901098886 |
| 7 | 81523212441914346544073433818166292337910075 |
| 8 | 839780322234263638551379612300530069754865868713324092842519030 |
| 9 | 81184462760528172324981018065090176893681709356914242351556151349811667519060498973390 |
[1,4,2052,455546040,103204230192540988, 47890666906311937749901098886, 81523212441914346544073433818166292337910075, 83978032223426363855137961230053006975486586871332\ 4092842519030, 81184462760528172324981018065090176893681709356914\ 242351556151349811667519060498973390] |