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 | 3 |
| 2 | 43 |
| 3 | 13 |
| 4 | 239 |
| 5 | 59 |
| 6 | 171869 |
| 7 | 569 |
| 8 | 32797 |
| 9 | 2551 |
| 10 | 649529 |
| 11 | 6133 |
| 12 | 1708984363 |
| 13 | 57331 |
| 14 | 103630981 |
| 15 | 65521 |
| 16 | 301327031 |
| 17 | 262127 |
| 18 | 82244873046857 |
| 19 | 11943917 |
| 20 | 38354628391 |
| 21 | 26214379 |
| 22 | 679922958173 |
| 23 | 37748713 |
| 24 | 584125518798828101 |
| 25 | 553648103 |
| 26 | 7625597484961 |
| 27 | 2281701349 |
| 28 | 882592301503097 |
| 29 | 8153726947 |