| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 7 |
| 4 | 28 |
| 5 | 31 |
| 6 | 34 |
| 7 | 55 |
| 8 | 58 |
| 9 | 61 |
| 10 | 244 |
| 11 | 247 |
| 12 | 250 |
| 13 | 271 |
| 14 | 274 |
| 15 | 277 |
| 16 | 298 |
| 17 | 301 |
| 18 | 304 |
| 19 | 487 |
| 20 | 490 |
| 21 | 493 |
| 22 | 514 |
| 23 | 517 |
| 24 | 520 |
| 25 | 541 |
| 26 | 544 |
| 27 | 547 |
| 28 | 2188 |
| 29 | 2191 |
| 30 | 2194 |
| 31 | 2215 |
| 32 | 2218 |
| 33 | 2221 |
| 34 | 2242 |
| 35 | 2245 |
| 36 | 2248 |
| 37 | 2431 |
| 38 | 2434 |
| 39 | 2437 |
| 40 | 2458 |
| 41 | 2461 |
| 42 | 2464 |
| 43 | 2485 |
| 44 | 2488 |
| 45 | 2491 |
| 46 | 2674 |
| 47 | 2677 |
| 48 | 2680 |
| 49 | 2701 |
| 50 | 2704 |
| 51 | 2707 |
| 52 | 2728 |
| 53 | 2731 |
| 54 | 2734 |
[1,4,7,28,31,34,55,58,61,244,247,250,271,274,277, 298,301,304,487,490,493,514,517,520,541,544,547, 2188,2191,2194,2215,2218,2221,2242,2245,2248,2431, 2434,2437,2458,2461,2464,2485,2488,2491,2674,2677, 2680,2701,2704,2707,2728,2731,2734] |