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 | 2 |
| 2 | 44 |
| 3 | 12 |
| 4 | 2316 |
| 5 | 56 |
| 6 | 86756 |
| 7 | 7548 |
| 8 | 2745504 |
| 9 | 14216 |
| 10 | 8303228 |
| 11 | 27440 |
| 12 | 26755926552 |
| 13 | 17777912 |
| 14 | 337554780656 |
| 15 | 166149231952 |
| 16 | 41032825702988 |
| 17 | 10165065032 |
| 18 | 19445273523788 |
| 19 | 559223251080 |
| 20 | 52853093762480872 |
| 21 | 2217608618621076 |
| 22 | 3130076262074284420 |
| 23 | 9840817961344 |