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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 31 |
| 2 | 614 |
| 3 | 9926 |
| 4 | 142995 |
| 5 | 1915077 |
| 6 | 24414088 |
| 7 | 300588892 |
| 8 | 3608146949 |
| 9 | 42498447563 |
| 10 | 493420114122 |
| 11 | 5665664143698 |
| 12 | 64496965543063 |
| 13 | 729264545514289 |
| 14 | 8201673484111916 |
| 15 | 91847355888191144 |
| 16 | 1025058980614782537 |
[1,31,614,9926,142995,1915077,24414088,300588892, 3608146949,42498447563,493420114122,5665664143698, 64496965543063,729264545514289,8201673484111916, 91847355888191144,1025058980614782537] |