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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 76 |
| 3 | 1326 |
| 4 | 23248 |
| 5 | 407832 |
| 6 | 7154944 |
| 7 | 125526240 |
| 8 | 2202232576 |
| 9 | 38635976064 |
| 10 | 677829707776 |
| 11 | 11891846929920 |
| 12 | 208630607073280 |
| 13 | 3660216151873536 |
| 14 | 64214845877125120 |
| 15 | 1126585496573239296 |
| 16 | 19764820171301257216 |
[5,76,1326,23248,407832,7154944,125526240, 2202232576,38635976064,677829707776, 11891846929920,208630607073280,3660216151873536, 64214845877125120,1126585496573239296, 19764820171301257216] |