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 | 3 |
| 2 | 7 |
| 3 | 31 |
| 4 | 43 |
| 5 | 79 |
| 6 | 127 |
| 7 | 157 |
| 8 | 241 |
| 9 | 337 |
| 10 | 727 |
| 11 | 1321 |
| 12 | 3121 |
| 13 | 4423 |
| 14 | 6163 |
| 15 | 6841 |
| 16 | 8191 |
| 17 | 19183 |
| 18 | 19681 |
| 19 | 22651 |
| 20 | 26407 |
| 21 | 28549 |
| 22 | 29761 |
| 23 | 37057 |
| 24 | 68881 |
| 25 | 78121 |
| 26 | 113233 |
| 27 | 117643 |
| 28 | 121453 |
| 29 | 130303 |
| 30 | 131071 |
| 31 | 143263 |
| 32 | 208393 |
| 33 | 292141 |
| 34 | 371281 |
| 35 | 375157 |
| 36 | 412807 |
| 37 | 524287 |
| 38 | 527803 |