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 | 2 |
| 2 | 5 |
| 3 | 17 |
| 4 | 41 |
| 5 | 73 |
| 6 | 97 |
| 7 | 137 |
| 8 | 193 |
| 9 | 257 |
| 10 | 521 |
| 11 | 577 |
| 12 | 641 |
| 13 | 1033 |
| 14 | 1153 |
| 15 | 2081 |
| 16 | 2113 |
| 17 | 4129 |
| 18 | 7681 |
| 19 | 8353 |
| 20 | 8737 |
| 21 | 9281 |
| 22 | 10369 |
| 23 | 10753 |
| 24 | 12289 |
| 25 | 16417 |
| 26 | 17921 |
| 27 | 18433 |
| 28 | 21569 |
| 29 | 25601 |
| 30 | 32801 |
| 31 | 32833 |
| 32 | 36353 |
| 33 | 37889 |
| 34 | 38921 |
| 35 | 39041 |
| 36 | 40961 |
| 37 | 50177 |
| 38 | 53377 |
| 39 | 65537 |
| 40 | 131617 |
| 41 | 133121 |
| 42 | 136193 |
| 43 | 139273 |
| 44 | 139297 |
| 45 | 139393 |
| 46 | 147457 |
| 47 | 163841 |