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| n | a(n) |
|---|---|
| 1 | 66 |
| 2 | 3358 |
| 3 | 216466 |
| 4 | 13943772 |
| 5 | 871209026 |
| 6 | 52509347006 |
| 7 | 3073046007824 |
| 8 | 175659478218938 |
| 9 | 9853875472731614 |
| 10 | 544420779803461484 |
| 11 | 29705625866016751450 |
| 12 | 1604088383366277766514 |
| 13 | 85864081342833064010380 |
[66,3358,216466,13943772,871209026,52509347006, 3073046007824,175659478218938,9853875472731614, 544420779803461484,29705625866016751450, 1604088383366277766514,85864081342833064010380] |