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 | 5197 |
| 2 | 22522 |
| 3 | 67567 |
| 4 | 337837 |
| 5 | 788287 |
| 6 | 1013512 |
| 7 | 1914412 |
| 8 | 17229712 |
| 9 | 50923372 |
| 10 | 65472907 |
| 11 | 132094462 |
| 12 | 254616862 |
| 13 | 327364537 |
| 14 | 2291551762 |
| 15 | 5856187837 |
| 16 | 12548973937 |
| 17 | 72784048837 |
| 18 | 158117071612 |
| 19 | 218352146512 |
| 20 | 363920244187 |