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 | 41 |
| 2 | 556 |
| 3 | 4175 |
| 4 | 21631 |
| 5 | 86828 |
| 6 | 289248 |
| 7 | 835812 |
| 8 | 2159025 |
| 9 | 5093737 |
| 10 | 11151140 |
| 11 | 22925695 |
| 12 | 44678543 |
| 13 | 83149600 |
| 14 | 148659968 |
| 15 | 256576512 |
| 16 | 429221457 |
| 17 | 698321649 |
| 18 | 1108104700 |
| 19 | 1719162599 |
| 20 | 2613217519 |
| 21 | 3898939484 |
| 22 | 5718981280 |
| 23 | 8258412500 |
| 24 | 11754751905 |