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 | 8 |
| 1 | 57 |
| 2 | 449 |
| 3 | 3585 |
| 4 | 28673 |
| 5 | 229377 |
| 6 | 1835009 |
| 7 | 14680065 |
| 8 | 117440513 |
| 9 | 939524097 |
| 10 | 7516192769 |
| 11 | 60129542145 |
| 12 | 481036337153 |
| 13 | 3848290697217 |
| 14 | 30786325577729 |
| 15 | 246290604621825 |
| 16 | 1970324836974593 |
| 17 | 15762598695796737 |
| 18 | 126100789566373889 |