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 | 8 |
| 3 | 34 |
| 4 | 142 |
| 5 | 596 |
| 6 | 2530 |
| 7 | 10842 |
| 8 | 46766 |
| 9 | 202594 |
| 10 | 880210 |