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 | 59 |
| 2 | 9739 |
| 3 | 63353 |
| 4 | 209459 |
| 5 | 15596509 |
| 6 | 154858631 |
| 7 | 1794246731 |
| 8 | 4076149487 |
| 9 | 45603526979 |
| 10 | 11092303227413 |
| 11 | 93864728285579 |
| 12 | 1319833868136653 |
| 13 | 11656098322067917 |
| 14 | 27803086068196217 |
| 15 | 1781976386163140977 |
| 16 | 32382366940106296979 |
| 17 | 100447117955224696057 |
| 18 | 707388643757314709297 |