| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 16 |
| 4 | 20 |
| 5 | 23 |
| 6 | 30 |
| 7 | 32 |
| 8 | 34 |
| 9 | 39 |
| 10 | 44 |
| 11 | 47 |
| 12 | 54 |
| 13 | 58 |
| 14 | 68 |
| 15 | 75 |
| 16 | 85 |
| 17 | 86 |
| 18 | 87 |
| 19 | 113 |
| 20 | 114 |
| 21 | 115 |
| 22 | 126 |
| 23 | 135 |
| 24 | 142 |
| 25 | 148 |
| 26 | 153 |
| 27 | 159 |
| 28 | 163 |
| 29 | 168 |
| 30 | 172 |
| 31 | 180 |
| 32 | 184 |
| 33 | 188 |
| 34 | 195 |
| 35 | 205 |
| 36 | 208 |
| 37 | 211 |
| 38 | 214 |
| 39 | 217 |
| 40 | 220 |
| 41 | 223 |
| 42 | 226 |
| 43 | 234 |
| 44 | 237 |
| 45 | 242 |
| 46 | 247 |
| 47 | 252 |
| 48 | 257 |
| 49 | 262 |
| 50 | 269 |
| 51 | 276 |
| 52 | 278 |
| 53 | 287 |
| 54 | 289 |
| 55 | 302 |
| 56 | 304 |
[2,4,16,20,23,30,32,34,39,44,47,54,58,68,75,85,86, 87,113,114,115,126,135,142,148,153,159,163,168, 172,180,184,188,195,205,208,211,214,217,220,223, 226,234,237,242,247,252,257,262,269,276,278,287, 289,302,304] |