| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 12 |
| 3 | 15 |
| 4 | 16 |
| 5 | 21 |
| 6 | 24 |
| 7 | 25 |
| 8 | 28 |
| 9 | 32 |
| 10 | 33 |
| 11 | 39 |
| 12 | 40 |
| 13 | 48 |
| 14 | 49 |
| 15 | 51 |
| 16 | 52 |
| 17 | 55 |
| 18 | 56 |
| 19 | 57 |
| 20 | 60 |
| 21 | 69 |
| 22 | 76 |
| 23 | 80 |
| 24 | 84 |
| 25 | 85 |
| 26 | 87 |
| 27 | 88 |
| 28 | 91 |
| 29 | 93 |
| 30 | 96 |
| 31 | 100 |
| 32 | 104 |
| 33 | 111 |
| 34 | 115 |
| 35 | 120 |
| 36 | 121 |
| 37 | 123 |
| 38 | 124 |
| 39 | 128 |
| 40 | 129 |
| 41 | 132 |
| 42 | 133 |
| 43 | 136 |
| 44 | 140 |
| 45 | 141 |
| 46 | 145 |
| 47 | 148 |
| 48 | 152 |
| 49 | 156 |
| 50 | 159 |
| 51 | 168 |
| 52 | 169 |
| 53 | 172 |
| 54 | 176 |
| 55 | 177 |
| 56 | 183 |
| 57 | 184 |
| 58 | 187 |
| 59 | 192 |
| 60 | 200 |
| 61 | 201 |
| 62 | 204 |
| 63 | 205 |
| 64 | 213 |
| 65 | 217 |
| 66 | 219 |
| 67 | 220 |
| 68 | 224 |
| 69 | 228 |
[4,12,15,16,21,24,25,28,32,33,39,40,48,49,51,52, 55,56,57,60,69,76,80,84,85,87,88,91,93,96,100,104, 111,115,120,121,123,124,128,129,132,133,136,140, 141,145,148,152,156,159,168,169,172,176,177,183, 184,187,192,200,201,204,205,213,217,219,220,224, 228] |