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) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 9 |
| 7 | 15 |
| 8 | 17 |
| 9 | 51 |
| 10 | 85 |
| 11 | 119 |
| 12 | 153 |
| 13 | 255 |
| 14 | 257 |
| 15 | 273 |
| 16 | 771 |
| 17 | 819 |
| 18 | 1285 |
| 19 | 1317 |
| 20 | 1365 |
| 21 | 1397 |
| 22 | 1799 |
| 23 | 1831 |
| 24 | 1879 |
| 25 | 1911 |
| 26 | 2313 |
| 27 | 2409 |
| 28 | 2457 |
| 29 | 2553 |
| 30 | 3855 |
| 31 | 3951 |
| 32 | 3999 |
| 33 | 4095 |
| 34 | 4097 |
| 35 | 4369 |
| 36 | 12291 |
| 37 | 13107 |
| 38 | 20485 |
| 39 | 21029 |
| 40 | 21845 |
| 41 | 22389 |
| 42 | 28679 |
| 43 | 29223 |
| 44 | 30039 |
| 45 | 30583 |
| 46 | 36873 |
| 47 | 38505 |