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 | 1 |
| 1 | 26 |
| 2 | 348 |
| 3 | 2698 |
| 4 | 14751 |
| 5 | 62781 |
| 6 | 222190 |
| 7 | 681460 |
| 8 | 1865715 |
| 9 | 4655535 |
| 10 | 10756921 |
| 11 | 23290026 |
| 12 | 47700173 |
| 13 | 93104473 |
| 14 | 174248451 |
| 15 | 314246511 |
| 16 | 548380980 |
| 17 | 929209095 |
| 18 | 1533389605 |
| 19 | 2470568045 |
| 20 | 3894914166 |
| 21 | 6019752376 |
| 22 | 9136114923 |
| 23 | 13635769173 |
| 24 | 20039850376 |
| 25 | 29033765566 |