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 | 2 |
| 1 | 14 |
| 2 | 194 |
| 3 | 2702 |
| 4 | 37634 |
| 5 | 524174 |
| 6 | 7300802 |
| 7 | 101687054 |
| 8 | 1416317954 |
| 9 | 19726764302 |
| 10 | 274758382274 |
| 11 | 3826890587534 |
| 12 | 53301709843202 |
| 13 | 742397047217294 |
| 14 | 10340256951198914 |
| 15 | 144021200269567502 |
| 16 | 2005956546822746114 |
| 17 | 27939370455248878094 |
| 18 | 389145229826661547202 |
| 19 | 5420093847118012782734 |