The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 14 |
| 3 | 202 |
| 4 | 2879 |
| 5 | 40983 |
| 6 | 583419 |
| 7 | 8304016 |
| 8 | 118195328 |
| 9 | 1682332699 |
| 10 | 23945477164 |
| 11 | 340827864824 |
| 12 | 4851172222091 |
| 13 | 69049142818994 |
| 14 | 982810732310121 |
| 15 | 13988833113623959 |
| 16 | 199110007092542464 |
| 17 | 2834031588079597413 |
[0,14,202,2879,40983,583419,8304016,118195328, 1682332699,23945477164,340827864824,4851172222091, 69049142818994,982810732310121,13988833113623959, 199110007092542464,2834031588079597413] |