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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 41 |
| 4 | 428 |
| 5 | 7588 |
| 6 | 235992 |
| 7 | 12750773 |
| 8 | 1196790145 |
| 9 | 195443817921 |
| 10 | 55484180929526 |
| 11 | 27388366928551712 |
| 12 | 23507551792998353446 |
| 13 | 35081808543792928475951 |
| 14 | 91032423727427789694636918 |
| 15 | 410722028606679785606473590135 |
[2,7,41,428,7588,235992,12750773,1196790145, 195443817921,55484180929526,27388366928551712, 23507551792998353446,35081808543792928475951, 91032423727427789694636918, 410722028606679785606473590135] |