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 | 3 |
| 1 | 14 |
| 2 | 98 |
| 3 | 794 |
| 4 | 6818 |
| 5 | 60074 |
| 6 | 535538 |
| 7 | 4799354 |
| 8 | 43112258 |
| 9 | 387682634 |
| 10 | 3487832978 |
| 11 | 31385253914 |
| 12 | 282446313698 |
| 13 | 2541932937194 |
| 14 | 22877060890418 |
| 15 | 205892205836474 |
| 16 | 1853024483819138 |
| 17 | 16677198879535754 |
| 18 | 150094704016475858 |