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 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 47 |
| 6 | 59 |
| 7 | 179 |
| 8 | 239 |
| 9 | 359 |
| 10 | 719 |
| 11 | 839 |
| 12 | 1259 |
| 13 | 5039 |
| 14 | 7559 |
| 15 | 10079 |
| 16 | 55439 |
| 17 | 110879 |
| 18 | 166319 |
| 19 | 665279 |
| 20 | 1081079 |
| 21 | 1441439 |
| 22 | 6486479 |
| 23 | 32432399 |
| 24 | 61261199 |
| 25 | 698377679 |
| 26 | 735134399 |
| 27 | 1102701599 |
| 28 | 1396755359 |
| 29 | 2205403199 |
| 30 | 20951330399 |
| 31 | 41902660799 |