The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 58 |
| 3 | 665 |
| 4 | 7172 |
| 5 | 92206 |
| 6 | 1096217 |
| 7 | 13530178 |
| 8 | 164914460 |
| 9 | 2020163498 |
| 10 | 24703508188 |
| 11 | 302309943629 |
| 12 | 3698448129411 |
| 13 | 45252432505040 |
| 14 | 553659760056682 |
| 15 | 6774120187730445 |
| 16 | 82881818656461776 |
| 17 | 1014068105098968313 |
[4,58,665,7172,92206,1096217,13530178,164914460, 2020163498,24703508188,302309943629,3698448129411, 45252432505040,553659760056682,6774120187730445, 82881818656461776,1014068105098968313] |