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) |
|---|---|
| 0 | 1 |
| 1 | 29 |
| 2 | 434 |
| 3 | 4466 |
| 4 | 35524 |
| 5 | 232812 |
| 6 | 1308509 |
| 7 | 6482689 |
| 8 | 28879476 |
| 9 | 117441764 |
| 10 | 441128513 |
| 11 | 1544927933 |
| 12 | 5083859819 |
| 13 | 15819621191 |
| 14 | 46800677805 |
| 15 | 132236761657 |
| 16 | 358269068693 |
| 17 | 933922599849 |
| 18 | 2349408360136 |
| 19 | 5718723151160 |
| 20 | 13500485623812 |
| 21 | 30975333122308 |
| 22 | 69200799829694 |
| 23 | 150787694622966 |