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 | 31 |
| 1 | 94 |
| 2 | 125 |
| 3 | 1094 |
| 4 | 5595 |
| 5 | 6689 |
| 6 | 12284 |
| 7 | 43541 |
| 8 | 317071 |
| 9 | 360612 |
| 10 | 677683 |
| 11 | 5104393 |
| 12 | 15990862 |
| 13 | 21095255 |
| 14 | 37086117 |
| 15 | 206525840 |
| 16 | 1689292837 |
| 17 | 1895818677 |
| 18 | 7376748868 |
| 19 | 459254248493 |
| 20 | 1385139494347 |
| 21 | 1844393742840 |