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 | 8 |
| 2 | 25 |
| 3 | 43 |
| 4 | 97 |
| 5 | 523 |
| 6 | 1751 |
| 7 | 5573 |
| 8 | 21575 |
| 9 | 76833 |
| 10 | 266179 |
| 11 | 971949 |
| 12 | 3482591 |
| 13 | 12336431 |
| 14 | 44409867 |
| 15 | 159182895 |
| 16 | 567732335 |
| 17 | 2035296081 |
| 18 | 7291955435 |
| 19 | 26069806559 |
| 20 | 93348365103 |
| 21 | 334298657839 |
| 22 | 1196193957779 |
| 23 | 4282016007317 |
| 24 | 15330901431591 |