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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 131584 |
| 3 | 193739769 |
| 4 | 34360262656 |
| 5 | 1907353515625 |
| 6 | 50780008567296 |
| 7 | 814206940192849 |
| 8 | 9007199791611904 |
| 9 | 75047319391891761 |
| 10 | 500000005000000000 |
| 11 | 2779958669714828041 |
| 12 | 13311666671401304064 |
| 13 | 56227703544907942489 |
[0,1,131584,193739769,34360262656,1907353515625, 50780008567296,814206940192849,9007199791611904, 75047319391891761,500000005000000000, 2779958669714828041,13311666671401304064, 56227703544907942489] |