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A116506 as a simple table
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 169 |
| 4 | 28065 |
| 5 | 16114831 |
| 6 | 33686890209 |
| 7 | 262530190180063 |
| 8 | 7717643584470877185 |
[0,3,169,28065,16114831,33686890209, 262530190180063,7717643584470877185] |