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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 7 |
| 5 | 13 |
| 6 | 13 |
| 7 | 19 |
| 8 | 19 |
| 9 | 31 |
| 10 | 31 |
| 11 | 31 |
| 12 | 31 |
| 13 | 43 |
| 14 | 43 |
| 15 | 43 |
| 16 | 43 |
| 17 | 61 |
| 18 | 61 |
| 19 | 61 |
| 20 | 61 |
| 21 | 67 |
| 22 | 67 |
| 23 | 67 |
| 24 | 67 |
| 25 | 91 |
| 26 | 91 |
| 27 | 91 |
| 28 | 91 |
| 29 | 91 |
| 30 | 91 |
| 31 | 91 |
| 32 | 91 |
| 33 | 121 |
| 34 | 121 |
| 35 | 121 |
| 36 | 121 |
| 37 | 127 |
| 38 | 127 |
| 39 | 127 |
| 40 | 127 |
| 41 | 151 |
| 42 | 151 |
| 43 | 151 |
| 44 | 151 |
| 45 | 151 |
| 46 | 151 |
| 47 | 151 |
| 48 | 151 |
| 49 | 211 |
| 50 | 211 |
| 51 | 211 |
| 52 | 211 |
| 53 | 211 |
| 54 | 211 |
| 55 | 211 |
| 56 | 211 |
| 57 | 211 |
| 58 | 211 |
| 59 | 211 |
| 60 | 211 |
| 61 | 211 |
[1,3,7,7,13,13,19,19,31,31,31,31,43,43,43,43,61, 61,61,61,67,67,67,67,91,91,91,91,91,91,91,91,121, 121,121,121,127,127,127,127,151,151,151,151,151, 151,151,151,211,211,211,211,211,211,211,211,211, 211,211,211,211] |