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 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 9 |
| 6 | 24 |
| 7 | 41 |
| 8 | 121 |
| 9 | 212 |
| 10 | 520 |
| 11 | 773 |
| 12 | 2577 |
| 13 | 3037 |
| 14 | 8081 |
| 15 | 13954 |
| 16 | 32124 |
| 17 | 41695 |
| 18 | 118784 |
| 19 | 150188 |
| 20 | 411484 |
| 21 | 604304 |
| 22 | 1305265 |
| 23 | 1954823 |
| 24 | 5326890 |
| 25 | 7331606 |