The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 68 |
| 3 | 1748 |
| 4 | 53530 |
| 5 | 1608428 |
| 6 | 48463174 |
| 7 | 1459796386 |
| 8 | 43973372728 |
| 9 | 1324601869208 |
| 10 | 39900761486200 |
| 11 | 1201923918350574 |
| 12 | 36205352039307450 |
| 13 | 1090607729123289700 |
| 14 | 32852193168911490342 |
| 15 | 989601088617366786966 |
| 16 | 29809587127374534704744 |
[0,68,1748,53530,1608428,48463174,1459796386, 43973372728,1324601869208,39900761486200, 1201923918350574,36205352039307450, 1090607729123289700,32852193168911490342, 989601088617366786966,29809587127374534704744] |