The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 8 |
| 5 | 11 |
| 6 | 23 |
| 7 | 26 |
| 8 | 59 |
| 9 | 83 |
| 10 | 89 |
| 11 | 116 |
| 12 | 1103 |
| 13 | 1568 |
| 14 | 5768 |
| 15 | 13376 |
| 16 | 17810 |
| 17 | 18614 |
| 18 | 66209 |
| 19 | 167933 |
| 20 | 188318 |
[1,2,5,8,11,23,26,59,83,89,116,1103,1568,5768, 13376,17810,18614,66209,167933,188318] |