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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 148 |
| 3 | 18556 |
| 4 | 8317996 |
| 5 | 14197016484 |
| 6 | 95884587957284 |
| 7 | 2621894498331024092 |
| 8 | 294433751149574057834796 |
| 9 | 137064853562490916405823252564 |
| 10 | 266206369700280385363973380215109284 |
[4,148,18556,8317996,14197016484,95884587957284, 2621894498331024092,294433751149574057834796, 137064853562490916405823252564, 266206369700280385363973380215109284] |