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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 12 |
| 6 | 15 |
| 7 | 31 |
| 8 | 56 |
| 9 | 63 |
| 10 | 127 |
| 11 | 135 |
| 12 | 168 |
| 13 | 234 |
| 14 | 240 |
| 15 | 255 |
| 16 | 260 |
| 17 | 384 |
| 18 | 504 |
| 19 | 511 |
| 20 | 720 |
| 21 | 819 |
| 22 | 896 |
| 23 | 992 |
| 24 | 1023 |
| 25 | 1080 |
| 26 | 1344 |
| 27 | 1512 |
| 28 | 1638 |
| 29 | 2047 |
| 30 | 2240 |
| 31 | 2352 |
| 32 | 3276 |
| 33 | 3564 |
| 34 | 3584 |
| 35 | 3744 |
| 36 | 3840 |
| 37 | 4095 |
| 38 | 4320 |
| 39 | 4655 |
| 40 | 7280 |
| 41 | 7448 |
| 42 | 8191 |
| 43 | 9360 |
| 44 | 10304 |
| 45 | 12825 |
| 46 | 12896 |
| 47 | 13104 |
| 48 | 14256 |
| 49 | 14725 |
| 50 | 15795 |
| 51 | 16256 |