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 | 8 |
| 1 | 41 |
| 2 | 90 |
| 3 | 131 |
| 4 | 221 |
| 5 | 1678 |
| 6 | 1899 |
| 7 | 3577 |
| 8 | 9053 |
| 9 | 48842 |
| 10 | 790525 |
| 11 | 4001467 |
| 12 | 8793459 |
| 13 | 12794926 |
| 14 | 21588385 |
| 15 | 163913621 |
| 16 | 185502006 |
| 17 | 349415627 |
| 18 | 884333260 |
| 19 | 4771081927 |
| 20 | 77221644092 |
| 21 | 390879302387 |
| 22 | 858980248866 |
| 23 | 1249859551253 |
| 24 | 2108839800119 |
| 25 | 16011738152086 |
| 26 | 18120577952205 |