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A100279 as a simple table
| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 1 |
| 2 | 5 |
| 3 | 11 |
| 4 | 30 |
| 5 | 200 |
| 6 | 5880 |
| 7 | 1149852 |
| 8 | 6643838880 |
| 9 | 7639424866275970 |
| 10 | 50755107359004694925071660 |
| 11 | 387739824812222466915538827541705412334750 |
| 12 | 19679776435706023589554719270187917683310683639911856695096924149852 |
[4,1,5,11,30,200,5880,1149852,6643838880, 7639424866275970,50755107359004694925071660, 387739824812222466915538827541705412334750, 19679776435706023589554719270187917683310683639911\ 856695096924149852] |