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 | 84 |
| 2 | 1498 |
| 3 | 11620 |
| 4 | 55650 |
| 5 | 195972 |
| 6 | 559258 |
| 7 | 1371316 |
| 8 | 2999682 |
| 9 | 6003956 |
| 10 | 11193882 |
| 11 | 19695172 |
| 12 | 33023074 |
| 13 | 53163684 |
| 14 | 82663002 |
| 15 | 124723732 |
| 16 | 183309826 |
| 17 | 263258772 |
| 18 | 370401626 |
| 19 | 511690788 |
| 20 | 695335522 |