The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 5 |
| 6 | 5 |
| 7 | 7 |
| 8 | 7 |
| 9 | 7 |
| 10 | 7 |
| 11 | 11 |
| 12 | 11 |
| 13 | 11 |
| 14 | 11 |
| 15 | 11 |
| 16 | 11 |
| 17 | 11 |
| 18 | 11 |
| 19 | 13 |
| 20 | 13 |
| 21 | 13 |
| 22 | 13 |
| 23 | 13 |
| 24 | 13 |
| 25 | 13 |
| 26 | 13 |
| 27 | 13 |
| 28 | 13 |
| 29 | 13 |
| 30 | 13 |
| 31 | 13 |
| 32 | 13 |
| 33 | 17 |
| 34 | 17 |
| 35 | 17 |
| 36 | 17 |
| 37 | 17 |
| 38 | 19 |
| 39 | 19 |
| 40 | 19 |
| 41 | 19 |
| 42 | 23 |
| 43 | 23 |
| 44 | 23 |
| 45 | 23 |
| 46 | 23 |
| 47 | 23 |
| 48 | 23 |
| 49 | 23 |
| 50 | 23 |
| 51 | 23 |
| 52 | 23 |
| 53 | 23 |
| 54 | 25 |
| 55 | 25 |
| 56 | 25 |
| 57 | 25 |
| 58 | 25 |
| 59 | 25 |
| 60 | 25 |
| 61 | 25 |
| 62 | 25 |
| 63 | 25 |
| 64 | 25 |
| 65 | 25 |
| 66 | 25 |
| 67 | 25 |
| 68 | 29 |
[2,3,3,3,5,5,7,7,7,7,11,11,11,11,11,11,11,11,13, 13,13,13,13,13,13,13,13,13,13,13,13,13,17,17,17, 17,17,19,19,19,19,23,23,23,23,23,23,23,23,23,23, 23,23,25,25,25,25,25,25,25,25,25,25,25,25,25,25, 29] |