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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 2835 |
| 3 | 144375 |
| 4 | 9656521875 |
| 5 | 727613515629 |
| 6 | 1924950961452519 |
| 7 | 169849119537100575 |
| 8 | 515343459815505282121875 |
| 9 | 49523686986654845229890625 |
| 10 | 156852007784587147805477109405 |
| 11 | 15901454576103641443903862431665 |
| 12 | 1683931647757461343713885153275036775 |
| 13 | 177089976268148398718338641838887890625 |
[1,6,2835,144375,9656521875,727613515629, 1924950961452519,169849119537100575, 515343459815505282121875, 49523686986654845229890625, 156852007784587147805477109405, 15901454576103641443903862431665, 1683931647757461343713885153275036775, 177089976268148398718338641838887890625] |