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 | 31 |
| 2 | 127 |
| 3 | 257 |
| 4 | 683 |
| 5 | 1103 |
| 6 | 1801 |
| 7 | 2089 |
| 8 | 2113 |
| 9 | 2351 |
| 10 | 2731 |
| 11 | 3191 |
| 12 | 4051 |
| 13 | 4513 |
| 14 | 5419 |
| 15 | 6361 |
| 16 | 8191 |
| 17 | 9719 |
| 18 | 11119 |
| 19 | 11447 |
| 20 | 13367 |
| 21 | 14449 |
| 22 | 14951 |
| 23 | 20231 |
| 24 | 20857 |
| 25 | 23279 |
| 26 | 23311 |
| 27 | 26317 |
| 28 | 29191 |
| 29 | 30269 |
| 30 | 32377 |
| 31 | 37171 |
| 32 | 38737 |
| 33 | 39551 |
| 34 | 43441 |
| 35 | 43691 |
| 36 | 49477 |
| 37 | 54001 |
| 38 | 55633 |
| 39 | 55871 |
| 40 | 59393 |