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 | 2 |
| 2 | 20771 |
| 3 | 40487 |
| 4 | 41542 |
| 5 | 80974 |
| 6 | 83084 |
| 7 | 161948 |
| 8 | 643901 |
| 9 | 1255097 |
| 10 | 1287802 |
| 11 | 1391657 |
| 12 | 1931703 |
| 13 | 2510194 |
| 14 | 2575604 |
| 15 | 2783314 |
| 16 | 3765291 |
| 17 | 3863406 |
| 18 | 4174971 |
| 19 | 5020388 |
| 20 | 5151208 |
| 21 | 5566628 |
| 22 | 7530582 |
| 23 | 7726812 |
| 24 | 8349942 |
| 25 | 10040776 |
| 26 | 11133256 |
| 27 | 15061164 |
| 28 | 15308227 |
| 29 | 15453624 |
| 30 | 16699884 |