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A058037 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 20 |
| 5 | 40 |
| 6 | 104 |
| 7 | 110 |
| 8 | 208 |
| 9 | 472 |
| 10 | 832 |
| 11 | 1982 |
| 12 | 25628 |
| 13 | 235532 |
[1,2,8,20,40,104,110,208,472,832,1982,25628, 235532] |