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 | 3 |
| 1 | 53 |
| 2 | 433 |
| 3 | 13941 |
| 4 | 111759 |
| 5 | 1789509 |
| 6 | 14320329 |
| 7 | 916611309 |
| 8 | 7333257267 |
| 9 | 117334608047 |
| 10 | 938685468127 |
| 11 | 30038055403185 |
| 12 | 240304869286059 |
| 13 | 3844880951681069 |
| 14 | 30759058568289097 |
| 15 | 3937160132112061181 |