The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 21 |
| 8 | 22 |
| 9 | 35 |
| 10 | 55 |
| 11 | 182 |
| 12 | 221 |
| 13 | 231 |
| 14 | 357 |
| 15 | 442 |
| 16 | 715 |
| 17 | 1105 |
| 18 | 1430 |
| 19 | 2958 |
| 20 | 23345 |
| 21 | 106981 |
| 22 | 144210 |
| 23 | 219965 |
| 24 | 226083 |
| 25 | 496961 |
[2,3,5,6,10,15,21,22,35,55,182,221,231,357,442, 715,1105,1430,2958,23345,106981,144210,219965, 226083,496961] |