The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 7 |
| 5 | 4 |
| 6 | 7 |
| 7 | 12 |
| 8 | 15 |
| 9 | 4 |
| 10 | 7 |
| 11 | 12 |
| 12 | 15 |
| 13 | 12 |
| 14 | 23 |
| 15 | 36 |
| 16 | 31 |
| 17 | 4 |
| 18 | 7 |
| 19 | 12 |
| 20 | 15 |
| 21 | 12 |
| 22 | 23 |
| 23 | 36 |
| 24 | 31 |
| 25 | 12 |
[0,2,3,4,7,4,7,12,15,4,7,12,15,12,23,36,31,4,7,12, 15,12,23,36,31,12] |