The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 44 |
| 2 | 206 |
| 3 | 1168 |
| 4 | 6984 |
| 5 | 41808 |
| 6 | 250464 |
| 7 | 1501248 |
| 8 | 9001344 |
| 9 | 53983488 |
| 10 | 323802624 |
| 11 | 1942422528 |
| 12 | 11652962304 |
| 13 | 69911482368 |
| 14 | 419443728384 |
| 15 | 2516561707008 |
| 16 | 15098967588864 |
| 17 | 90592194920448 |
| 18 | 543546727071744 |
| 19 | 3261254592626688 |
[44,206,1168,6984,41808,250464,1501248,9001344, 53983488,323802624,1942422528,11652962304, 69911482368,419443728384,2516561707008, 15098967588864,90592194920448,543546727071744, 3261254592626688] |