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 | 10 |
| 3 | 154 |
| 4 | 2449 |
| 5 | 39025 |
| 6 | 621946 |
| 7 | 9912106 |
| 8 | 157971745 |
| 9 | 2517635809 |
| 10 | 40124201194 |
| 11 | 639469583290 |
| 12 | 10191389131441 |
| 13 | 162422756519761 |
| 14 | 2588572715184730 |
| 15 | 41254740686435914 |
| 16 | 657487278267789889 |
| 17 | 10478541711598202305 |
| 18 | 166999180107303446986 |
| 19 | 2661508340005256949466 |