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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 11 |
| 4 | 19 |
| 5 | 21 |
| 6 | 29 |
| 7 | 31 |
| 8 | 39 |
| 9 | 41 |
| 10 | 49 |
| 11 | 51 |
| 12 | 59 |
| 13 | 61 |
| 14 | 69 |
| 15 | 71 |
| 16 | 79 |
| 17 | 81 |
| 18 | 89 |
| 19 | 91 |
| 20 | 99 |
| 21 | 101 |
| 22 | 109 |
| 23 | 111 |
| 24 | 119 |
| 25 | 121 |
| 26 | 129 |
| 27 | 131 |
| 28 | 139 |
| 29 | 141 |
| 30 | 149 |
| 31 | 151 |
| 32 | 159 |
| 33 | 161 |
| 34 | 169 |
| 35 | 171 |
| 36 | 179 |
| 37 | 181 |
| 38 | 189 |
| 39 | 191 |
| 40 | 199 |
| 41 | 201 |
| 42 | 209 |
| 43 | 211 |
| 44 | 219 |
| 45 | 221 |
| 46 | 229 |
| 47 | 231 |
| 48 | 239 |
| 49 | 241 |
| 50 | 249 |
| 51 | 251 |
| 52 | 259 |
| 53 | 261 |
| 54 | 269 |
| 55 | 271 |
| 56 | 279 |
| 57 | 281 |
[1,9,11,19,21,29,31,39,41,49,51,59,61,69,71,79,81, 89,91,99,101,109,111,119,121,129,131,139,141,149, 151,159,161,169,171,179,181,189,191,199,201,209, 211,219,221,229,231,239,241,249,251,259,261,269, 271,279,281] |