This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 24 |
| 5 | 48 |
| 6 | 96 |
| 7 | 192 |
| 8 | 195 |
| 9 | 384 |
| 10 | 387 |
| 11 | 390 |
| 12 | 768 |
| 13 | 771 |
| 14 | 774 |
| 15 | 780 |
| 16 | 1536 |
| 17 | 1539 |
| 18 | 1542 |
| 19 | 1548 |
| 20 | 1560 |
| 21 | 3072 |
| 22 | 3075 |
| 23 | 3078 |
| 24 | 3084 |
| 25 | 3096 |
| 26 | 3120 |
| 27 | 6144 |
| 28 | 6147 |
| 29 | 6150 |
| 30 | 6156 |
| 31 | 6168 |
| 32 | 6192 |
| 33 | 6240 |
| 34 | 12288 |
| 35 | 12291 |
| 36 | 12294 |
| 37 | 12300 |
| 38 | 12312 |
| 39 | 12336 |
| 40 | 12384 |
| 41 | 12480 |
| 42 | 12483 |