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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 279 |
| 3 | 3444 |
| 4 | 49872 |
| 5 | 742601 |
| 6 | 10781621 |
| 7 | 157255466 |
| 8 | 2296958734 |
| 9 | 33523275696 |
| 10 | 489291324927 |
| 11 | 7141941507836 |
| 12 | 104245214093823 |
| 13 | 1521582051098930 |
| 14 | 22209336054925012 |
| 15 | 324172090472099899 |
| 16 | 4731682732442250173 |
[12,279,3444,49872,742601,10781621,157255466, 2296958734,33523275696,489291324927,7141941507836, 104245214093823,1521582051098930, 22209336054925012,324172090472099899, 4731682732442250173] |