The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 60 |
| 2 | 120 |
| 3 | 259 |
| 4 | 674 |
| 5 | 1747 |
| 6 | 5100 |
| 7 | 12573 |
| 8 | 33929 |
| 9 | 96273 |
| 10 | 254784 |
| 11 | 702943 |
| 12 | 2032001 |
[60,120,259,674,1747,5100,12573,33929,96273, 254784,702943,2032001] |