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 | 5 |
| 5 | 8 |
| 6 | 9 |
| 7 | 15 |
| 8 | 51 |
| 9 | 71 |
| 10 | 77 |
| 11 | 224 |
| 12 | 296 |
| 13 | 315 |
| 14 | 2090 |
| 15 | 2906 |
| 16 | 3395 |
| 17 | 3882 |
| 18 | 5114 |
| 19 | 6056 |
| 20 | 7254 |
| 21 | 7995 |
| 22 | 18173 |
| 23 | 18971 |
| 24 | 35006 |
| 25 | 69674 |
| 26 | 175428 |
| 27 | 253313 |