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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 53 |
| 7 | 114 |
| 8 | 281 |
| 9 | 4329 |
| 10 | 8939 |
| 11 | 22207 |
| 12 | 142181 |
| 13 | 164388 |
| 14 | 306569 |
| 15 | 470957 |
| 16 | 777526 |
| 17 | 1248483 |
| 18 | 78183472 |
| 19 | 79431955 |
| 20 | 157615427 |
| 21 | 237047382 |
| 22 | 394662809 |
| 23 | 631710191 |
| 24 | 4184923955 |
| 25 | 9001558101 |
| 26 | 22188040157 |
| 27 | 341822160456 |
| 28 | 705832361069 |
| 29 | 1753486882594 |