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 | 3 |
| 4 | 7 |
| 5 | 24 |
| 6 | 31 |
| 7 | 179 |
| 8 | 389 |
| 9 | 9126 |
| 10 | 18641 |
| 11 | 46408 |
| 12 | 65049 |
| 13 | 111457 |
| 14 | 6195184 |
| 15 | 6306641 |
| 16 | 31421748 |
| 17 | 100571885 |
| 18 | 131993633 |
| 19 | 232565518 |
| 20 | 3620476403 |
| 21 | 3853041921 |
| 22 | 38297853692 |
| 23 | 80448749305 |
| 24 | 440541600217 |
| 25 | 3164239950824 |
| 26 | 3604781551041 |