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 | 4 |
| 3 | 5 |
| 4 | 6 |
| 5 | 7 |
| 6 | 9 |
| 7 | 10 |
| 8 | 15 |
| 9 | 21 |
| 10 | 45 |
| 11 | 58 |
| 12 | 82 |
| 13 | 86 |
| 14 | 92 |
| 15 | 105 |
| 16 | 116 |
| 17 | 196 |
| 18 | 238 |
| 19 | 308 |
| 20 | 310 |
| 21 | 320 |
| 22 | 380 |
| 23 | 972 |
| 24 | 978 |
| 25 | 996 |
| 26 | 1068 |
| 27 | 1368 |
| 28 | 5640 |
| 29 | 10890 |