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 | 1264460 |
| 2 | 3379784 |
| 3 | 6164364 |
| 4 | 11102500 |
| 5 | 18271604 |
| 6 | 36320580 |
| 7 | 54976960 |
| 8 | 83135125 |
| 9 | 129857825 |
| 10 | 210986457 |
| 11 | 385264277 |
| 12 | 594788487 |
| 13 | 924792067 |
| 14 | 1423007483 |
| 15 | 2659409715 |
| 16 | 4458691045 |
| 17 | 6846467595 |
| 18 | 9563962830 |
| 19 | 12443660134 |
| 20 | 16149431959 |