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 | 142414669 |
| 2 | 229949449 |
| 3 | 257789053 |
| 4 | 258063709 |
| 5 | 260297563 |
| 6 | 268625899 |
| 7 | 306099181 |
| 8 | 314919391 |
| 9 | 364008181 |
| 10 | 376789801 |
| 11 | 385240381 |
| 12 | 394059907 |
| 13 | 401400211 |
| 14 | 425592157 |
| 15 | 439385917 |
| 16 | 458614501 |
| 17 | 470906101 |
| 18 | 486127723 |
| 19 | 496201099 |
| 20 | 497422531 |
| 21 | 499512049 |