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 | 2801 |
| 2 | 637421 |
| 3 | 2625641 |
| 4 | 78914411 |
| 5 | 195534851 |
| 6 | 7294932341 |
| 7 | 19408913261 |
| 8 | 57765899591 |
| 9 | 133311428141 |
| 10 | 212872312241 |
| 11 | 1508520377381 |
| 12 | 1960226457281 |
| 13 | 5412080545901 |
| 14 | 11543487851801 |
| 15 | 19383356741711 |
| 16 | 20748237948131 |
| 17 | 24212632812551 |
| 18 | 25413171899021 |
| 19 | 28240486488581 |
| 20 | 46922470889141 |