The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 10 |
| 4 | 18 |
| 5 | 58 |
| 6 | 101 |
| 7 | 149 |
| 8 | 1050 |
| 9 | 1885 |
| 10 | 5925 |
| 11 | 10114 |
| 12 | 15173 |
| 13 | 47226 |
| 14 | 550594 |
| 15 | 585005 |
| 16 | 1049925 |
| 17 | 1533085 |
| 18 | 56174285 |
| 19 | 104987349 |
| 20 | 123053789 |
| 21 | 1017425330 |
| 22 | 1230586669 |
| 23 | 1245114914 |
| 24 | 38878044589 |
| 25 | 101111538130 |
| 26 | 177627538130 |
| 27 | 4728038741701 |
[1,5,10,18,58,101,149,1050,1885,5925,10114,15173, 47226,550594,585005,1049925,1533085,56174285, 104987349,123053789,1017425330,1230586669, 1245114914,38878044589,101111538130,177627538130, 4728038741701] |