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 | 2 |
| 2 | 3 |
| 3 | 8 |
| 4 | 43 |
| 5 | 51 |
| 6 | 94 |
| 7 | 239 |
| 8 | 333 |
| 9 | 572 |
| 10 | 2049 |
| 11 | 21062 |
| 12 | 44173 |
| 13 | 65235 |
| 14 | 239878 |
| 15 | 544991 |
| 16 | 13319662 |
| 17 | 13864653 |
| 18 | 54913621 |
| 19 | 123691895 |
| 20 | 425989306 |
| 21 | 549681201 |
| 22 | 975670507 |
| 23 | 1525351708 |
| 24 | 138257324227 |
| 25 | 278040000162 |
| 26 | 416297324389 |
| 27 | 5273607892830 |