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 | 13 |
| 3 | 169 |
| 4 | 2041 |
| 5 | 2197 |
| 6 | 26533 |
| 7 | 28561 |
| 8 | 114413 |
| 9 | 320437 |
| 10 | 344929 |
| 11 | 371293 |
| 12 | 1487369 |
| 13 | 4165681 |
| 14 | 4484077 |
| 15 | 4826809 |
| 16 | 17962841 |
| 17 | 19335797 |
| 18 | 24355253 |
| 19 | 50308609 |
| 20 | 54153853 |
| 21 | 58293001 |
| 22 | 62748517 |
| 23 | 77457601 |
| 24 | 233516933 |
| 25 | 249302027 |
| 26 | 251365361 |
| 27 | 316618289 |