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 | 68198461 |
| 2 | 115084901 |
| 3 | 138358573 |
| 4 | 156811273 |
| 5 | 213397621 |
| 6 | 220576331 |
| 7 | 234432217 |
| 8 | 260050573 |
| 9 | 282261961 |
| 10 | 290996753 |
| 11 | 330864497 |
| 12 | 353653063 |
| 13 | 371500819 |
| 14 | 383616341 |
| 15 | 406915273 |
| 16 | 426240379 |
| 17 | 445800983 |
| 18 | 446707201 |
| 19 | 449558323 |
| 20 | 460339577 |
| 21 | 472782553 |