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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 16 |
| 3 | 256 |
| 4 | 11236 |
| 5 | 107584 |
| 6 | 3904576 |
| 7 | 76212900 |
| 8 | 1650959424 |
| 9 | 39031534096 |
| 10 | 864587548224 |
| 11 | 19412272036096 |
| 12 | 437675604807204 |
| 13 | 9849402103175716 |
| 14 | 221594251463336196 |
| 15 | 4988444738917091904 |
| 16 | 112294697209531469824 |
[0,16,256,11236,107584,3904576,76212900, 1650959424,39031534096,864587548224, 19412272036096,437675604807204,9849402103175716, 221594251463336196,4988444738917091904, 112294697209531469824] |