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A177560 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 84 |
| 4 | 2054 |
| 5 | 78231 |
| 6 | 4290094 |
| 7 | 320821079 |
| 8 | 31414709469 |
| 9 | 3903342922319 |
| 10 | 600255674485509 |
| 11 | 111949642485388109 |
| 12 | 24900064681761042208 |
| 13 | 6512262064364063116565 |
| 14 | 1978717544093002418592533 |
[1,6,84,2054,78231,4290094,320821079,31414709469, 3903342922319,600255674485509,111949642485388109, 24900064681761042208,6512262064364063116565, 1978717544093002418592533] |