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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 468 |
| 3 | 111096 |
| 4 | 39670362 |
| 5 | 17313263640 |
| 6 | 8581243954044 |
| 7 | 4650485509103976 |
| 8 | 2692853733312152946 |
| 9 | 1641063780244320916056 |
| 10 | 1041574815624514527248040 |
[7,468,111096,39670362,17313263640,8581243954044, 4650485509103976,2692853733312152946, 1641063780244320916056,1041574815624514527248040] |