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) |
|---|---|
| 1 | 22 |
| 2 | 484 |
| 3 | 942 |
| 4 | 4881 |
| 5 | 14225 |
| 6 | 33631 |
| 7 | 138552 |
| 8 | 452415 |
| 9 | 1213630 |
| 10 | 4316538 |
| 11 | 14467167 |
| 12 | 42033425 |
| 13 | 139413515 |
| 14 | 465091766 |
| 15 | 1417537231 |
| 16 | 4568534780 |
| 17 | 15054960868 |
| 18 | 47122875377 |
| 19 | 150415872153 |
| 20 | 490190933287 |
| 21 | 1555376086444 |
| 22 | 4955936438589 |