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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 12 |
| 3 | 94 |
| 4 | 1522 |
| 5 | 48154 |
| 6 | 3087600 |
| 7 | 377880794 |
| 8 | 93356591804 |
| 9 | 46415548879976 |
| 10 | 44773963087975388 |
| 11 | 86770399797767582434 |
| 12 | 340765670578000502365102 |
| 13 | 2625605734866823121935402410 |
| 14 | 40755373130582885082115865730892 |
| 15 | 1290109927277547765958474680645604818 |
[1,2,12,94,1522,48154,3087600,377880794, 93356591804,46415548879976,44773963087975388, 86770399797767582434,340765670578000502365102, 2625605734866823121935402410, 40755373130582885082115865730892, 1290109927277547765958474680645604818] |