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 | 53 |
| 3 | 97 |
| 4 | 2927 |
| 5 | 3331 |
| 6 | 3533 |
| 7 | 4139 |
| 8 | 5351 |
| 9 | 6361 |
| 10 | 6563 |
| 11 | 6967 |
| 12 | 7573 |
| 13 | 8179 |
| 14 | 9391 |
| 15 | 111109 |
| 16 | 113111 |
| 17 | 123121 |
| 18 | 129127 |
| 19 | 131129 |
| 20 | 143141 |
| 21 | 153151 |
| 22 | 155153 |
| 23 | 159157 |
| 24 | 161159 |
| 25 | 171169 |
| 26 | 185183 |
| 27 | 189187 |
| 28 | 191189 |
| 29 | 195193 |
| 30 | 219217 |
| 31 | 221219 |
| 32 | 225223 |
| 33 | 233231 |
| 34 | 239237 |
| 35 | 255253 |