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 | 210 |
| 2 | 2927 |
| 3 | 20581 |
| 4 | 107315 |
| 5 | 414849 |
| 6 | 1376640 |
| 7 | 4224150 |
| 8 | 11063618 |
| 9 | 27395788 |
| 10 | 62364155 |
| 11 | 129081579 |
| 12 | 252768753 |
| 13 | 480307611 |
| 14 | 885449578 |
| 15 | 1541654028 |
| 16 | 2623783892 |
| 17 | 4318819858 |
| 18 | 6832984023 |
| 19 | 10644660237 |
| 20 | 16195499543 |
| 21 | 24304992465 |
| 22 | 36231495836 |
| 23 | 52916319106 |
| 24 | 75433702422 |