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 | 2 |
| 1 | 14 |
| 2 | 142 |
| 3 | 1850 |
| 4 | 29186 |
| 5 | 538078 |
| 6 | 11317646 |
| 7 | 266906858 |
| 8 | 6965034370 |
| 9 | 199037675054 |
| 10 | 6176578272782 |
| 11 | 206703355298074 |
| 12 | 7416522514174082 |
| 13 | 283886725100730110 |
| 14 | 11542917975992870926 |
| 15 | 496687811705758019018 |
| 16 | 22543169666612417313026 |