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 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 24 |
| 6 | 51 |
| 7 | 84 |
| 8 | 251 |
| 9 | 419 |
| 10 | 755 |
| 11 | 960 |
| 12 | 3121 |
| 13 | 3582 |
| 14 | 4515 |
| 15 | 9299 |
| 16 | 35878 |
| 17 | 42613 |
| 18 | 127165 |
| 19 | 211625 |
| 20 | 235352 |
| 21 | 5457937 |
| 22 | 17353542 |
| 23 | 23023556 |