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| n | a(n) |
|---|---|
| 1 | 220 |
| 2 | 1184 |
| 3 | 469028 |
| 4 | 11693290 |
| 5 | 37784810 |
| 6 | 6057622044705 |
| 7 | 14772536572365 |
| 8 | 35019687151575 |
| 9 | 19245649704560895 |
| 10 | 42564348058073842 |
| 11 | 1004007953218033575 |
| 12 | 6778057036176125612 |
[220,1184,469028,11693290,37784810,6057622044705, 14772536572365,35019687151575,19245649704560895, 42564348058073842,1004007953218033575, 6778057036176125612] |