The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 130 |
| 2 | 540 |
| 3 | 1750 |
| 4 | 5860 |
| 5 | 25601 |
| 6 | 115438 |
| 7 | 620736 |
| 8 | 3167807 |
| 9 | 17606301 |
| 10 | 98882069 |
| 11 | 733424153 |
| 12 | 4422336009 |
[130,540,1750,5860,25601,115438,620736,3167807, 17606301,98882069,733424153,4422336009] |