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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 1490 |
| 3 | 117022 |
| 4 | 9943416 |
| 5 | 832899775 |
| 6 | 69961268156 |
| 7 | 5873481159019 |
| 8 | 493147308003276 |
| 9 | 41404696495593733 |
| 10 | 3476354713685117295 |
| 11 | 291875923358702188677 |
| 12 | 24506004816897100837250 |
| 13 | 2057532704150988606181644 |
[13,1490,117022,9943416,832899775,69961268156, 5873481159019,493147308003276,41404696495593733, 3476354713685117295,291875923358702188677, 24506004816897100837250,2057532704150988606181644] |