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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 76 |
| 3 | 1584 |
| 4 | 49036 |
| 5 | 1266624 |
| 6 | 35446376 |
| 7 | 956312244 |
| 8 | 26231137608 |
| 9 | 714107480512 |
| 10 | 19507209473948 |
| 11 | 532049001583280 |
| 12 | 14521612514267224 |
| 13 | 396222067735245796 |
| 14 | 10812492512879834968 |
| 15 | 295042237941175359056 |
| 16 | 8051107927651445871340 |
[1,76,1584,49036,1266624,35446376,956312244, 26231137608,714107480512,19507209473948, 532049001583280,14521612514267224, 396222067735245796,10812492512879834968, 295042237941175359056,8051107927651445871340] |