The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 1 |
| 8 | 1 |
| 9 | 5 |
| 10 | 5 |
| 11 | 1 |
| 12 | 1 |
| 13 | 7 |
| 14 | 9 |
| 15 | 11 |
| 16 | 1 |
| 17 | 1 |
| 18 | 9 |
| 19 | 13 |
| 20 | 25 |
| 21 | 21 |
| 22 | 1 |
| 23 | 1 |
| 24 | 11 |
| 25 | 17 |
| 26 | 43 |
| 27 | 53 |
| 28 | 43 |
| 29 | 1 |
| 30 | 1 |
| 31 | 13 |
| 32 | 21 |
| 33 | 65 |
| 34 | 97 |
| 35 | 125 |
| 36 | 85 |
| 37 | 1 |
| 38 | 1 |
| 39 | 15 |
| 40 | 25 |
| 41 | 91 |
| 42 | 153 |
| 43 | 255 |
| 44 | 273 |
| 45 | 171 |
| 46 | 1 |
| 47 | 1 |
| 48 | 17 |
| 49 | 29 |
| 50 | 121 |
| 51 | 221 |
| 52 | 441 |
| 53 | 597 |
| 54 | 609 |
| 55 | 341 |
| 56 | 1 |
| 57 | 1 |
| 58 | 19 |
| 59 | 33 |
| 60 | 155 |
| 61 | 301 |
| 62 | 691 |
| 63 | 1089 |
| 64 | 1443 |
| 65 | 1325 |
| 66 | 683 |
| 67 | 1 |
| 68 | 1 |
| 69 | 21 |
[1,1,1,1,1,3,1,1,5,5,1,1,7,9,11,1,1,9,13,25,21,1, 1,11,17,43,53,43,1,1,13,21,65,97,125,85,1,1,15,25, 91,153,255,273,171,1,1,17,29,121,221,441,597,609, 341,1,1,19,33,155,301,691,1089,1443,1325,683,1,1, 21] |