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 | 0 |
| 2 | 3 |
| 3 | 4 |
| 4 | 7 |
| 5 | 16 |
| 6 | 17 |
| 7 | 59 |
| 8 | 283 |
| 9 | 311 |
| 10 | 383 |
| 11 | 499 |
| 12 | 521 |
| 13 | 541 |
| 14 | 599 |
| 15 | 1193 |
| 16 | 1993 |
| 17 | 2671 |
| 18 | 7547 |
| 19 | 24019 |
| 20 | 46301 |
| 21 | 48121 |
| 22 | 68597 |
| 23 | 91283 |
| 24 | 131497 |
| 25 | 148663 |
| 26 | 184463 |
| 27 | 341233 |