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) |
|---|---|
| 0 | 1 |
| 1 | 162 |
| 2 | 4482 |
| 3 | 53154 |
| 4 | 374274 |
| 5 | 1854882 |
| 6 | 7159170 |
| 7 | 22952610 |
| 8 | 63821826 |
| 9 | 158611106 |
| 10 | 360027522 |
| 11 | 758497698 |
| 12 | 1501390338 |
| 13 | 2818849698 |
| 14 | 5057616258 |
| 15 | 8724341922 |
| 16 | 14540038146 |
| 17 | 23507426466 |
| 18 | 36993091970 |
| 19 | 56826471330 |
| 20 | 85417838082 |
| 21 | 125897578914 |
| 22 | 182279185794 |
| 23 | 259648519842 |