The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 168 |
| 3 | 315 |
| 4 | 295 |
| 5 | 4397 |
| 6 | 23857 |
| 7 | 58615 |
| 8 | 399831 |
| 9 | 2330661 |
| 10 | 8452508 |
| 11 | 43422677 |
| 12 | 244219167 |
| 13 | 1085667753 |
| 14 | 5198650416 |
| 15 | 27357344048 |
| 16 | 132450119759 |
| 17 | 633779549006 |
| 18 | 3192101777945 |
| 19 | 15861698093325 |
| 20 | 76966813423383 |
| 21 | 380116339135931 |
[8,168,315,295,4397,23857,58615,399831,2330661, 8452508,43422677,244219167,1085667753,5198650416, 27357344048,132450119759,633779549006, 3192101777945,15861698093325,76966813423383, 380116339135931] |