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 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 9 |
| 6 | 27 |
| 7 | 35 |
| 8 | 44 |
| 9 | 88 |
| 10 | 104 |
| 11 | 205 |
| 12 | 290 |
| 13 | 302 |
| 14 | 381 |
| 15 | 400 |
| 16 | 686 |
| 17 | 917 |
| 18 | 1150 |
| 19 | 2278 |
| 20 | 2757 |
| 21 | 3220 |
| 22 | 3316 |
| 23 | 7469 |
| 24 | 9535 |
| 25 | 21442 |
| 26 | 46409 |
| 27 | 103718 |
| 28 | 123688 |
| 29 | 147139 |