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 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 7 |
| 5 | 7 |
| 6 | 11 |
| 7 | 80 |
| 8 | 114 |
| 9 | 6099 |
| 10 | 11431 |
| 11 | 26617 |
| 12 | 33585 |
| 13 | 56088 |
| 14 | 61344 |
| 15 | 194790 |
| 16 | 234794 |
| 17 | 1389968 |
| 18 | 1786243 |
| 19 | 2418760 |
| 20 | 2647328 |
| 21 | 3746318 |
| 22 | 4952495 |
| 23 | 5249786 |
| 24 | 5341636 |
| 25 | 10517386 |
| 26 | 55449405 |
| 27 | 79637649 |
| 28 | 561022295 |
| 29 | 625320951 |
| 30 | 3650616781 |