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 | 7 |
| 2 | 17 |
| 3 | 42 |
| 4 | 106 |
| 5 | 273 |
| 6 | 717 |
| 7 | 1918 |
| 8 | 5218 |
| 9 | 14413 |
| 10 | 40349 |
| 11 | 114282 |
| 12 | 326938 |
| 13 | 943257 |
| 14 | 2740797 |
| 15 | 8010982 |
| 16 | 23529346 |
| 17 | 69385813 |
| 18 | 205282157 |
| 19 | 608959218 |
| 20 | 1810358938 |
| 21 | 5391414273 |
| 22 | 16078923309 |
| 23 | 48007516942 |
| 24 | 143470822498 |
| 25 | 429083952157 |
| 26 | 1284051486077 |