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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 134 |
| 4 | 1574 |
| 5 | 22262 |
| 6 | 370694 |
| 7 | 7008374 |
| 8 | 147805574 |
| 9 | 3447703862 |
| 10 | 88047037574 |
| 11 | 2438080410614 |
| 12 | 72703788119174 |
| 13 | 2321967591003062 |
| 14 | 79030014919422854 |
| 15 | 2854499200663284854 |
| 16 | 109018338380110506374 |
| 17 | 4388176453133542327862 |
| 18 | 185612789014681549094534 |
[1,2,14,134,1574,22262,370694,7008374,147805574, 3447703862,88047037574,2438080410614, 72703788119174,2321967591003062,79030014919422854, 2854499200663284854,109018338380110506374, 4388176453133542327862,185612789014681549094534] |