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 | 7 |
| 2 | 17 |
| 3 | 107 |
| 4 | 341 |
| 5 | 1799 |
| 6 | 4161 |
| 7 | 28123 |
| 8 | 81925 |
| 9 | 489335 |
| 10 | 1131601 |
| 11 | 7012459 |
| 12 | 22286421 |
| 13 | 117469191 |
| 14 | 273748289 |
| 15 | 1840690907 |
| 16 | 5390025989 |
| 17 | 31943819383 |
| 18 | 74441889105 |
| 19 | 461363702635 |
| 20 | 1465729172821 |
| 21 | 7728532584199 |
| 22 | 17872436875329 |
| 23 | 120787365293531 |
| 24 | 351860917551109 |