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 | 3 |
| 2 | 5 |
| 3 | 23 |
| 4 | 653 |
| 5 | 10103 |
| 6 | 83813 |
| 7 | 160403 |
| 8 | 234743 |
| 9 | 280373 |
| 10 | 1049603 |
| 11 | 3420653 |
| 12 | 6252503 |
| 13 | 11319863 |
| 14 | 52207853 |
| 15 | 92246423 |
| 16 | 146422103 |
| 17 | 174913853 |
| 18 | 221548343 |
| 19 | 442071653 |
| 20 | 479807123 |
| 21 | 577224653 |
| 22 | 607597853 |
| 23 | 655385603 |
| 24 | 937921253 |
| 25 | 1222865933 |
| 26 | 1249233683 |
| 27 | 1387525253 |
| 28 | 1506177293 |