The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 36 |
| 3 | 735 |
| 4 | 21972 |
| 5 | 871995 |
| 6 | 43308378 |
| 7 | 2588123811 |
| 8 | 180990517032 |
| 9 | 14507325973395 |
| 10 | 1311719669172750 |
| 11 | 132102208441613883 |
| 12 | 14666354372331521676 |
| 13 | 1779817542971018697003 |
| 14 | 234399632982398657764578 |
| 15 | 33297612755940733707395955 |
| 16 | 5075234637265322738651060688 |
| 17 | 826215756199826873368252279971 |
[1,3,36,735,21972,871995,43308378,2588123811, 180990517032,14507325973395,1311719669172750, 132102208441613883,14666354372331521676, 1779817542971018697003,234399632982398657764578, 33297612755940733707395955, 5075234637265322738651060688, 826215756199826873368252279971] |