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 | 4 |
| 1 | 4 |
| 2 | 8 |
| 3 | 104 |
| 4 | 212 |
| 5 | 313 |
| 6 | 11645 |
| 7 | 2329 |
| 8 | 73757 |
| 9 | 160772 |
| 10 | 646925 |
| 11 | 129385 |
| 12 | 25877 |
| 13 | 49838696 |
| 14 | 2503218301 |
| 15 | 16177487972 |
| 16 | 18226737365 |
| 17 | 3645347473 |
| 18 | 2526514341077 |
| 19 | 2510040201736 |
| 20 | 43137313790909 |
| 21 | 136233128831473 |
| 22 | 1960924754787877 |
| 23 | 1733911367978596 |
| 24 | 27260145118408781 |