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 | 42 |
| 2 | 101 |
| 3 | 6720 |
| 4 | 9212 |
| 5 | 226570 |
| 6 | 276404 |
| 7 | 288086 |
| 8 | 299668 |
| 9 | 339098 |
| 10 | 392228 |
| 11 | 412276 |
| 12 | 423395 |
| 13 | 530917 |
| 14 | 535759 |
| 15 | 559427 |
| 16 | 564209 |
| 17 | 666181 |
| 18 | 2835284 |
| 19 | 3592300 |
| 20 | 3911744 |
| 21 | 4080100 |
| 22 | 5980673 |
| 23 | 7230960 |
| 24 | 8787900 |
| 25 | 14960924 |
| 26 | 17130550 |
| 27 | 23324242 |
| 28 | 27449729 |
| 29 | 30437729 |
| 30 | 33869141 |
| 31 | 42073800 |