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 | 4 |
| 2 | 113 |
| 3 | 1026 |
| 4 | 5273 |
| 5 | 20170 |
| 6 | 60906 |
| 7 | 159798 |
| 8 | 371262 |
| 9 | 787640 |
| 10 | 1550813 |
| 11 | 2882994 |
| 12 | 5083015 |
| 13 | 8610474 |
| 14 | 14032370 |
| 15 | 22148796 |
| 16 | 33984174 |
| 17 | 50936912 |
| 18 | 74600413 |
| 19 | 107204886 |
| 20 | 151236555 |
| 21 | 209999748 |
| 22 | 287230504 |
| 23 | 387791652 |
| 24 | 516909272 |
| 25 | 681578384 |
| 26 | 888990683 |