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 | 6500 |
| 2 | 6501 |
| 3 | 6510 |
| 4 | 6511 |
| 5 | 6521 |
| 6 | 12066 |
| 7 | 50372 |
| 8 | 175677 |
| 9 | 553783 |
| 10 | 5224903 |
| 11 | 5224923 |
| 12 | 5246963 |
| 13 | 5302479 |
| 14 | 5854093 |
| 15 | 5854409 |
| 16 | 5854419 |
| 17 | 5854429 |
| 18 | 5854493 |
| 19 | 5855904 |
| 20 | 5864049 |
| 21 | 5865393 |
| 22 | 10990544 |
| 23 | 11071599 |