The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 21 |
| 5 | 31 |
| 6 | 37 |
| 7 | 41 |
| 8 | 53 |
| 9 | 73 |
| 10 | 101 |
| 11 | 175 |
| 12 | 203 |
| 13 | 225 |
| 14 | 455 |
| 15 | 557 |
| 16 | 651 |
| 17 | 1333 |
| 18 | 4823 |
| 19 | 20367 |
| 20 | 32555 |
| 21 | 52057 |
| 22 | 79371 |
| 23 | 267267 |
| 24 | 312155 |
[2,3,5,21,31,37,41,53,73,101,175,203,225,455,557, 651,1333,4823,20367,32555,52057,79371,267267, 312155] |