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 | 136 |
| 4 | 1891 |
| 5 | 26335 |
| 6 | 366796 |
| 7 | 5108806 |
| 8 | 71156485 |
| 9 | 991081981 |
| 10 | 13803991246 |
| 11 | 192264795460 |
| 12 | 2677903145191 |
| 13 | 37298379237211 |
| 14 | 519499406175760 |
| 15 | 7235693307223426 |
| 16 | 100780206894952201 |
| 17 | 1403687203222107385 |
| 18 | 19550840638214551186 |
| 19 | 272308081731781609216 |