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 | 2 |
| 2 | 3 |
| 3 | 8 |
| 4 | 11 |
| 5 | 30 |
| 6 | 161 |
| 7 | 835 |
| 8 | 996 |
| 9 | 552619 |
| 10 | 1658853 |
| 11 | 7188031 |
| 12 | 8846884 |
| 13 | 210666363 |
| 14 | 430179610 |
| 15 | 4082282853 |
| 16 | 8594745316 |
| 17 | 12677028169 |
| 18 | 3875088336861 |
| 19 | 3887765365030 |
| 20 | 7762853701891 |
| 21 | 11650619066921 |
| 22 | 42714710902654 |