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A124066 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 19 |
| 6 | 138 |
| 7 | 5555 |
| 8 | 5661606 |
| 9 | 8017014805939 |
| 10 | 549978189515061145367082 |
| 11 | 75619002235584922846322716556474301506401613843 |
| 12 | 615505010930370584284868847397460604890896977173300806488671348925702765535678512305286 |
[1,2,3,6,19,138,5555,5661606,8017014805939, 549978189515061145367082, 75619002235584922846322716556474301506401613843, 61550501093037058428486884739746060489089697717330\ 0806488671348925702765535678512305286] |