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 | 321197185 |
| 2 | 413631505 |
| 3 | 417241045 |
| 4 | 496050841 |
| 5 | 509033161 |
| 6 | 611397865 |
| 7 | 612347905 |
| 8 | 638959321 |
| 9 | 672389641 |
| 10 | 832060801 |
| 11 | 834720601 |
| 12 | 868234081 |
| 13 | 945959365 |
| 14 | 986088961 |
| 15 | 1074363265 |
| 16 | 1177800481 |
| 17 | 1210178305 |
| 18 | 1256855041 |
| 19 | 1410833281 |
| 20 | 1481619601 |