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 | 4 |
| 3 | 5 |
| 4 | 6 |
| 5 | 15 |
| 6 | 18 |
| 7 | 43 |
| 8 | 45 |
| 9 | 55 |
| 10 | 60 |
| 11 | 105 |
| 12 | 128 |
| 13 | 180 |
| 14 | 207 |
| 15 | 271 |
| 16 | 479 |
| 17 | 869 |
| 18 | 1220 |
| 19 | 1478 |
| 20 | 1937 |
| 21 | 4003 |
| 22 | 4213 |
| 23 | 5503 |
| 24 | 9562 |
| 25 | 11388 |
| 26 | 13120 |
| 27 | 34049 |
| 28 | 47178 |
| 29 | 156371 |
| 30 | 271039 |