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 | 14 |
| 4 | 37 |
| 5 | 301 |
| 6 | 806 |
| 7 | 6602 |
| 8 | 17689 |
| 9 | 144937 |
| 10 | 388346 |
| 11 | 3182006 |
| 12 | 8525917 |
| 13 | 69859189 |
| 14 | 187181822 |
| 15 | 1533720146 |
| 16 | 4109474161 |
| 17 | 33671984017 |
| 18 | 90221249714 |
| 19 | 739249928222 |
| 20 | 1980758019541 |
| 21 | 16229826436861 |
| 22 | 43486455180182 |
| 23 | 356316931682714 |
| 24 | 954721255944457 |
| 25 | 7822742670582841 |