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 | 37 |
| 3 | 418 |
| 4 | 2754 |
| 5 | 13080 |
| 6 | 49632 |
| 7 | 159654 |
| 8 | 452166 |
| 9 | 1157013 |
| 10 | 2724865 |
| 11 | 5988268 |
| 12 | 12410476 |
| 13 | 24456744 |
| 14 | 46132152 |
| 15 | 83740980 |
| 16 | 146935284 |
| 17 | 250134753 |
| 18 | 414416277 |
| 19 | 669990046 |
| 20 | 1059399550 |
| 21 | 1641605680 |
| 22 | 2497140360 |
| 23 | 3734542890 |
| 24 | 5498322570 |