The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 20039054 |
| 2 | 9883202426 |
| 3 | 4606843590302 |
| 4 | 2183158464447536 |
| 5 | 1028696788230851944 |
| 6 | 486569802610722280938 |
| 7 | 229687326408274791177808 |
| 8 | 108605494730585927438945340 |
| 9 | 51299121137631000207920371548 |
[20039054,9883202426,4606843590302, 2183158464447536,1028696788230851944, 486569802610722280938,229687326408274791177808, 108605494730585927438945340, 51299121137631000207920371548] |