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 | 8 |
| 2 | 35 |
| 3 | 126 |
| 4 | 417 |
| 5 | 1324 |
| 6 | 4111 |
| 7 | 12602 |
| 8 | 38333 |
| 9 | 116040 |
| 10 | 350187 |
| 11 | 1054678 |
| 12 | 3172249 |
| 13 | 9533156 |
| 14 | 28632263 |
| 15 | 85962354 |
| 16 | 258018165 |
| 17 | 774316672 |
| 18 | 2323474339 |
| 19 | 6971471630 |
| 20 | 20916512081 |
| 21 | 62753730588 |
| 22 | 188269580415 |
| 23 | 564825518506 |
| 24 | 1694510109997 |