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 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 13 |
| 5 | 23 |
| 6 | 128 |
| 7 | 151 |
| 8 | 1336 |
| 9 | 1487 |
| 10 | 8771 |
| 11 | 10258 |
| 12 | 19029 |
| 13 | 67345 |
| 14 | 153719 |
| 15 | 221064 |
| 16 | 4132871 |
| 17 | 4353935 |
| 18 | 12840741 |
| 19 | 42876158 |
| 20 | 55716899 |
| 21 | 98593057 |
| 22 | 548682184 |
| 23 | 647275241 |
| 24 | 5726884112 |
| 25 | 6374159353 |
| 26 | 37597680877 |