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 | 2 |
| 3 | 25 |
| 4 | 26 |
| 5 | 68 |
| 6 | 1054 |
| 7 | 1058 |
| 8 | 6472 |
| 9 | 251723 |
| 10 | 4124468 |
| 11 | 69709727 |
| 12 | 69709942 |
| 13 | 465769817 |
| 14 | 465769835 |
| 15 | 1208198860 |
| 16 | 8179002154 |
| 17 | 8179002176 |
| 18 | 8179002178 |
| 19 | 145935689360 |
| 20 | 145935689369 |
| 21 | 145935689392 |
| 22 | 145935689393 |