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 | 2 |
| 3 | 3 |
| 4 | 8 |
| 5 | 5 |
| 6 | 144 |
| 7 | 21 |
| 8 | 2584 |
| 9 | 46368 |
| 10 | 610 |
| 11 | 55 |
| 12 | 14930352 |
| 13 | 13 |
| 14 | 4807526976 |
| 15 | 6765 |
| 16 | 1548008755920 |
| 17 | 34 |
| 18 | 498454011879264 |
| 19 | 86267571272 |
| 20 | 832040 |
| 21 | 987 |
| 22 | 2880067194370816120 |
| 23 | 51680708854858323072 |
| 24 | 160500643816367088 |
| 25 | 75025 |