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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1681 |
| 3 | 783150 |
| 4 | 250043151 |
| 5 | 71703384184 |
| 6 | 19934900617863 |
| 7 | 5483824484276487 |
| 8 | 1502037917021311844 |
| 9 | 410628432970492896401 |
| 10 | 112160245091369049581311 |
| 11 | 30623519350300448308681813 |
| 12 | 8359714215859160247276696744 |
| 13 | 2281871672070839340863159155338 |
| 14 | 622836891043514813722341456961744 |
[1,1681,783150,250043151,71703384184, 19934900617863,5483824484276487, 1502037917021311844,410628432970492896401, 112160245091369049581311, 30623519350300448308681813, 8359714215859160247276696744, 2281871672070839340863159155338, 622836891043514813722341456961744] |