The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 31 |
| 3 | 707 |
| 4 | 11647 |
| 5 | 242602 |
| 6 | 4743311 |
| 7 | 93411402 |
| 8 | 1863379223 |
| 9 | 37097158961 |
| 10 | 737372275936 |
| 11 | 14668565862312 |
| 12 | 291924510277289 |
| 13 | 5808427537351763 |
| 14 | 115562866241227272 |
| 15 | 2299357190745139049 |
| 16 | 45750931870365018621 |
[1,31,707,11647,242602,4743311,93411402, 1863379223,37097158961,737372275936, 14668565862312,291924510277289,5808427537351763, 115562866241227272,2299357190745139049, 45750931870365018621] |