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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 8 |
| 6 | 13 |
| 7 | 18 |
| 8 | 36 |
| 9 | 53 |
| 10 | 57 |
| 11 | 69 |
| 12 | 206 |
| 13 | 273 |
| 14 | 400 |
| 15 | 983 |
| 16 | 1308 |
| 17 | 2581 |
| 18 | 3205 |
| 19 | 4118 |
| 20 | 13531 |
| 21 | 14892 |
| 22 | 88552 |
| 23 | 139128 |
| 24 | 171243 |
| 25 | 278063 |
| 26 | 332182 |
| 27 | 694354 |
| 28 | 3416773 |
| 29 | 4311381 |
| 30 | 4867024 |