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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 37 |
| 3 | 325 |
| 4 | 3141 |
| 5 | 32261 |
| 6 | 345605 |
| 7 | 3818501 |
| 8 | 43197445 |
| 9 | 497868805 |
| 10 | 5825331205 |
| 11 | 69013667845 |
| 12 | 826213203973 |
| 13 | 9979713945605 |
| 14 | 121472752156677 |
| 15 | 1488482728148997 |
| 16 | 18346810389299205 |
| 17 | 227319830355640325 |
| 18 | 2829629321065267205 |
| 19 | 35369618935665131525 |
| 20 | 443775430273133445125 |
[1,5,37,325,3141,32261,345605,3818501,43197445, 497868805,5825331205,69013667845,826213203973, 9979713945605,121472752156677,1488482728148997, 18346810389299205,227319830355640325, 2829629321065267205,35369618935665131525, 443775430273133445125] |