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 | 113 |
| 2 | 2705 |
| 3 | 28129 |
| 4 | 177697 |
| 5 | 807505 |
| 6 | 2908337 |
| 7 | 8818625 |
| 8 | 23429185 |
| 9 | 56070193 |
| 10 | 123302609 |
| 11 | 252868001 |
| 12 | 489082465 |
| 13 | 899992081 |
| 14 | 1586639089 |
| 15 | 2694819713 |
| 16 | 4429746305 |
| 17 | 7074058225 |
| 18 | 11009657617 |
| 19 | 16743877985 |
| 20 | 24940525217 |
| 21 | 36456362449 |
| 22 | 52383641905 |
| 23 | 74099318593 |
| 24 | 103321612481 |