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 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 21 |
| 8 | 32 |
| 9 | 42 |
| 10 | 64 |
| 11 | 84 |
| 12 | 128 |
| 13 | 168 |
| 14 | 256 |
| 15 | 336 |
| 16 | 512 |
| 17 | 672 |
| 18 | 1024 |
| 19 | 1344 |
| 20 | 2048 |
| 21 | 2231 |
| 22 | 2688 |
| 23 | 4096 |
| 24 | 4462 |
| 25 | 5376 |
| 26 | 8192 |
| 27 | 9324 |
| 28 | 10752 |
| 29 | 16384 |
| 30 | 18648 |
| 31 | 21504 |
| 32 | 32768 |
| 33 | 37296 |
| 34 | 43008 |
| 35 | 65536 |
| 36 | 74592 |
| 37 | 86016 |
| 38 | 131072 |
| 39 | 149184 |
| 40 | 172032 |
| 41 | 262144 |
| 42 | 298368 |
| 43 | 344064 |
| 44 | 524288 |
| 45 | 596736 |
| 46 | 688128 |
| 47 | 1048576 |