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 | 22 |
| 2 | 218 |
| 3 | 1116 |
| 4 | 4498 |
| 5 | 15791 |
| 6 | 49646 |
| 7 | 142177 |
| 8 | 375777 |
| 9 | 926559 |
| 10 | 2150622 |
| 11 | 4734429 |
| 12 | 9947574 |
| 13 | 20054339 |
| 14 | 38965176 |
| 15 | 73242344 |
| 16 | 133617438 |
| 17 | 237234842 |
| 18 | 410906947 |
| 19 | 695757399 |
| 20 | 1153741182 |
| 21 | 1876668923 |
| 22 | 2998531806 |
| 23 | 4712127751 |
| 24 | 7291234403 |