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 | 1 |
| 2 | 5 |
| 3 | 22 |
| 4 | 91 |
| 5 | 369 |
| 6 | 1486 |
| 7 | 5962 |
| 8 | 23884 |
| 9 | 95607 |
| 10 | 382568 |
| 11 | 1530552 |
| 12 | 6122765 |
| 13 | 24492171 |
| 14 | 97970902 |
| 15 | 391888040 |
| 16 | 1567561019 |
| 17 | 6270261786 |
| 18 | 25081082556 |
| 19 | 100324401036 |
| 20 | 401297745749 |
| 21 | 1605191266193 |
| 22 | 6420765631136 |
| 23 | 25683063657239 |
| 24 | 102732256894319 |